From 2005758c69a26888e1face60377c78804c9f0ca5 Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Mon, 7 Jul 2025 09:05:54 +0000
Subject: [PATCH 1/7] feat: add `stats/strided/dztest2`

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---
 .../@stdlib/stats/strided/dztest2/README.md   | 422 ++++++++++++++++++
 .../@stdlib/stats/strided/dztest2/binding.gyp | 170 +++++++
 .../stats/strided/dztest2/examples/index.js   |  36 ++
 .../stats/strided/dztest2/include.gypi        |  53 +++
 .../include/stdlib/stats/strided/dztest2.h    |  47 ++
 .../stats/strided/dztest2/lib/dztest2.js      |  67 +++
 .../strided/dztest2/lib/dztest2.native.js     |  68 +++
 .../stats/strided/dztest2/lib/index.js        |  80 ++++
 .../@stdlib/stats/strided/dztest2/lib/main.js |  35 ++
 .../stats/strided/dztest2/lib/native.js       |  35 ++
 .../stats/strided/dztest2/lib/ndarray.js      | 161 +++++++
 .../strided/dztest2/lib/ndarray.native.js     |  70 +++
 .../stats/strided/dztest2/manifest.json       | 141 ++++++
 .../stats/strided/dztest2/package.json        |  76 ++++
 .../stats/strided/dztest2/src/Makefile        |  70 +++
 .../@stdlib/stats/strided/dztest2/src/addon.c |  83 ++++
 .../@stdlib/stats/strided/dztest2/src/main.c  | 152 +++++++
 17 files changed, 1766 insertions(+)
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/README.md
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/binding.gyp
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/include.gypi
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/main.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/native.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/manifest.json
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/package.json
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/src/Makefile
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/README.md b/lib/node_modules/@stdlib/stats/strided/dztest2/README.md
new file mode 100644
index 000000000000..a78d4ecee956
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/README.md
@@ -0,0 +1,422 @@
+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2025 The Stdlib Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+-->
+
+<!-- lint disable max-heading-length -->
+
+# dztest2
+
+> Compute a two-sample Z-test for double-precision floating-point strided arrays.
+
+<section class="intro">
+
+A Z-test commonly refers to a two-sample location test which compares the means of two independent sets of measurements `X` and `Y` when the population standard deviations are known. A Z-test supports testing three different null hypotheses `H0`:
+
+-   `H0: μX - μY ≥ Δ` versus the alternative hypothesis `H1: μX - μY < Δ`.
+-   `H0: μX - μY ≤ Δ` versus the alternative hypothesis `H1: μX - μY > Δ`.
+-   `H0: μX - μY = Δ` versus the alternative hypothesis `H1: μX - μY ≠ Δ`.
+
+Here, `μX` and `μY` are the true population means of samples `X` and `Y`, respectively, and `Δ` is the hypothesized difference in means (typically `0` by default).
+
+</section>
+
+<!-- /.intro -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var dztest2 = require( '@stdlib/stats/strided/dztest2' );
+```
+
+#### dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out )
+
+Computes a two-sample Z-test for double-precision floating-point strided arrays.
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+
+var results = new Results();
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+// returns {...}
+
+var bool = ( out === results );
+// returns true
+```
+
+The function has the following parameters:
+
+-   **NX**: number of indexed elements in `x`.
+-   **NY**: number of indexed elements in `y`.
+-   **alternative**: [alternative hypothesis][@stdlib/stats/base/ztest/alternatives].
+-   **alpha**: significance level.
+-   **diff**: difference in means under the null hypothesis.
+-   **sigmax**: known standard deviation of `x`.
+-   **sigmay**: known standard deviation of `y`.
+-   **x**: input [`Float64Array`][@stdlib/array/float64].
+-   **strideX**: stride length for `x`.
+-   **y**: input [`Float64Array`][@stdlib/array/float64].
+-   **strideY**: stride length for `y`.
+-   **out**: output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
+
+The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to perform a two-sample Z-test over every other element in `x` and `y`,
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0, 0.0 ] );
+var y = new Float64Array( [ 3.0, 0.0, 3.0, 0.0, 5.0, 0.0, 7.0, 0.0, 7.0, 0.0 ] );
+
+var results = new Results();
+var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 2, y, 2, results );
+// returns {...}
+
+var bool = ( out === results );
+// returns true
+```
+
+Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
+
+<!-- eslint-disable stdlib/capitalized-comments -->
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x0 = new Float64Array( [ 0.0, 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+var y0 = new Float64Array( [ 0.0, 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+var y1 = new Float64Array( y0.buffer, y0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+var results = new Results();
+var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x1, 1, y1, 1, results );
+// returns {...}
+
+var bool = ( out === results );
+// returns true
+```
+
+#### dztest2.ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out )
+
+Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+
+var results = new Results();
+var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+// returns {...}
+
+var bool = ( out === results );
+// returns true
+```
+
+The function has the following additional parameters:
+
+-   **offsetX**: starting index for `x`.
+-   **offsetY**: starting index for `y`.
+
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, offset parameters support indexing semantics based on starting indices. For example, to perform a two-sample Z-test over every other element in `x` and `y` starting from the second element
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ 0.0, 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0 ] );
+var y = new Float64Array( [ 0.0, 3.0, 0.0, 3.0, 0.0, 5.0, 0.0, 7.0, 0.0, 7.0 ] );
+
+var results = new Results();
+var out = dztest2.ndarray( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 2, 1, y, 2, 1, results );
+// returns {...}
+
+var bool = ( out === results );
+// returns true
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+## Notes
+
+-   As a general rule of thumb, a Z-test is most reliable when `N >= 50`. For smaller sample sizes or when the standard deviation is unknown, prefer a t-test.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var normal = require( '@stdlib/random/array/normal' );
+var dztest2 = require( '@stdlib/stats/strided/dztest2' );
+
+var x = normal( 1000, 4.0, 2.0, {
+    'dtype': 'float64'
+});
+var y = normal( 800, 3.0, 2.0, {
+    'dtype': 'float64'
+});
+
+var results = new Results();
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, 2.0, x, 1, y, 1, results );
+// returns {...}
+
+console.log( out.toString() );
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- C interface documentation. -->
+
+* * *
+
+<section class="c">
+
+## C APIs
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- C usage documentation. -->
+
+<section class="usage">
+
+### Usage
+
+```c
+#include "stdlib/stats/strided/dztest2.h"
+```
+
+#### stdlib_strided_dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, \*X, strideX, \*Y, strideY, \*results )
+
+Computes a two-sample Z-test for double-precision floating-point strided arrays.
+
+```c
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+
+struct stdlib_stats_ztest_two_sample_float64_results results = {
+    .rejected = false,
+    .alpha = 0.0,
+    .alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+    .pValue = 0.0,
+    .statistic = 0.0,
+    .ci = { 0.0, 0.0 },
+    .nullValue = 0.0,
+    .xmean = 0.0,
+    .ymean = 0.0
+};
+
+const double x[] = { 4.0, 4.0, 6.0, 6.0, 5.0 };
+const double y[] = { 3.0, 3.0, 5.0, 7.0, 7.0 };
+
+stdlib_strided_dztest2( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, &results );
+```
+
+The function accepts the following arguments:
+
+-   **NX**: `[in] CBLAS_INT` number of indexed elements in `x`.
+-   **NY**: `[in] CBLAS_INT` number of indexed elements in `y`.
+-   **alternative**: `[in] enum STDLIB_STATS_ZTEST_ALTERNATIVE` [alternative hypothesis][@stdlib/stats/base/ztest/alternatives].
+-   **alpha**: `[in] double` significance level.
+-   **diff**: `[in] double` difference in means under the null hypothesis.
+-   **sigmax** `[in] double` known standard deviation of `x`.
+-   **sigmay** `[in] double` known standard deviation of `y`.
+-   **X**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **Y**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
+-   **results**: `[out] struct stdlib_stats_ztest_two_sample_results_float64*` output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
+
+```c
+void stdlib_strided_dztest2( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+```
+
+#### stdlib_strided_dztest2_ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, \*X, strideX, offsetX, \*Y, strideY, offsetY, \*results )
+
+Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+
+```c
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+
+struct stdlib_stats_ztest_two_sample_float64_results results = {
+    .rejected = false,
+    .alpha = 0.0,
+    .alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+    .pValue = 0.0,
+    .statistic = 0.0,
+    .ci = { 0.0, 0.0 },
+    .nullValue = 0.0,
+    .xmean = 0.0,
+    .ymean = 0.0
+};
+
+const double x[] = { 4.0, 4.0, 6.0, 6.0, 5.0 };
+const double y[] = { 3.0, 3.0, 5.0, 7.0, 7.0 };
+
+stdlib_strided_dztest2_ndarray( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, &results );
+```
+
+The function accepts the following arguments:
+
+-   **NX**: `[in] CBLAS_INT` number of indexed elements in `x`.
+-   **NY**: `[in] CBLAS_INT` number of indexed elements in `y`.
+-   **alternative**: `[in] enum STDLIB_STATS_ZTEST_ALTERNATIVE` [alternative hypothesis][@stdlib/stats/base/ztest/alternatives].
+-   **alpha**: `[in] double` significance level.
+-   **diff**: `[in] double` difference in means under the null hypothesis.
+-   **sigmax** `[in] double` known standard deviation of `x`.
+-   **sigmay** `[in] double` known standard deviation of `y`.
+-   **X**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **offsetX**: `[in] CBLAS_INT` starting index for `X`.
+-   **Y**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
+-   **offsetY**: `[in] CBLAS_INT` starting index for `Y`.
+-   **results**: `[out] struct stdlib_stats_ztest_two_sample_results_float64*` output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
+
+```c
+void stdlib_strided_dztest2_ndarray( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+```
+
+</section>
+
+<!-- /.usage -->
+
+<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- C API usage examples. -->
+
+<section class="examples">
+
+### Examples
+
+```c
+#include "stdlib/stats/strided/dztest2.h"
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+#include <stdbool.h>
+#include <stdio.h>
+
+int main( void ) {
+    // Create a strided arrays:
+    const double x[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
+    const double y[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
+
+    // Specify the number of elements:
+    const int NX = 4;
+    const int NY = 4;
+
+    // Specify the stride lengths:
+    const int strideX = 2;
+    const int strideY = 2;
+
+    // Initialize a results object:
+    struct stdlib_stats_ztest_two_sample_float64_results results = {
+        .rejected = false,
+        .alpha = 0.0,
+        .alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+        .pValue = 0.0,
+        .statistic = 0.0,
+        .ci = { 0.0, 0.0 },
+        .nullValue = 0.0,
+        .xmean = 0.0,
+        .ymean = 0.0
+    };
+
+    // Compute a Z-test:
+    stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, 3.0, x, strideX, y, strideY, &results );
+
+    // Print the result:
+    printf( "Statistic: %lf\n", results.statistic );
+    printf( "Null hypothesis was %s\n", ( results.rejected ) ? "rejected" : "not rejected" );
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<section class="references">
+
+</section>
+
+<!-- /.references -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+[variance]: https://en.wikipedia.org/wiki/Variance
+
+[@stdlib/array/float64]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/float64
+
+[@stdlib/stats/base/ztest/alternatives]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/base/ztest/alternatives
+
+[@stdlib/stats/base/ztest/two-sample/results/float64]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/base/ztest/two-sample/results/float64
+
+[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
+
+</section>
+
+<!-- /.links -->
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/binding.gyp b/lib/node_modules/@stdlib/stats/strided/dztest2/binding.gyp
new file mode 100644
index 000000000000..68a1ca11d160
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+  # List of files to include in this file:
+  'includes': [
+    './include.gypi',
+  ],
+
+  # Define variables to be used throughout the configuration for all targets:
+  'variables': {
+    # Target name should match the add-on export name:
+    'addon_target_name%': 'addon',
+
+    # Set variables based on the host OS:
+    'conditions': [
+      [
+        'OS=="win"',
+        {
+          # Define the object file suffix:
+          'obj': 'obj',
+        },
+        {
+          # Define the object file suffix:
+          'obj': 'o',
+        }
+      ], # end condition (OS=="win")
+    ], # end conditions
+  }, # end variables
+
+  # Define compile targets:
+  'targets': [
+
+    # Target to generate an add-on:
+    {
+      # The target name should match the add-on export name:
+      'target_name': '<(addon_target_name)',
+
+      # Define dependencies:
+      'dependencies': [],
+
+      # Define directories which contain relevant include headers:
+      'include_dirs': [
+        # Local include directory:
+        '<@(include_dirs)',
+      ],
+
+      # List of source files:
+      'sources': [
+        '<@(src_files)',
+      ],
+
+      # Settings which should be applied when a target's object files are used as linker input:
+      'link_settings': {
+        # Define libraries:
+        'libraries': [
+          '<@(libraries)',
+        ],
+
+        # Define library directories:
+        'library_dirs': [
+          '<@(library_dirs)',
+        ],
+      },
+
+      # C/C++ compiler flags:
+      'cflags': [
+        # Enable commonly used warning options:
+        '-Wall',
+
+        # Aggressive optimization:
+        '-O3',
+      ],
+
+      # C specific compiler flags:
+      'cflags_c': [
+        # Specify the C standard to which a program is expected to conform:
+        '-std=c99',
+      ],
+
+      # C++ specific compiler flags:
+      'cflags_cpp': [
+        # Specify the C++ standard to which a program is expected to conform:
+        '-std=c++11',
+      ],
+
+      # Linker flags:
+      'ldflags': [],
+
+      # Apply conditions based on the host OS:
+      'conditions': [
+        [
+          'OS=="mac"',
+          {
+            # Linker flags:
+            'ldflags': [
+              '-undefined dynamic_lookup',
+              '-Wl,-no-pie',
+              '-Wl,-search_paths_first',
+            ],
+          },
+        ], # end condition (OS=="mac")
+        [
+          'OS!="win"',
+          {
+            # C/C++ flags:
+            'cflags': [
+              # Generate platform-independent code:
+              '-fPIC',
+            ],
+          },
+        ], # end condition (OS!="win")
+      ], # end conditions
+    }, # end target <(addon_target_name)
+
+    # Target to copy a generated add-on to a standard location:
+    {
+      'target_name': 'copy_addon',
+
+      # Declare that the output of this target is not linked:
+      'type': 'none',
+
+      # Define dependencies:
+      'dependencies': [
+        # Require that the add-on be generated before building this target:
+        '<(addon_target_name)',
+      ],
+
+      # Define a list of actions:
+      'actions': [
+        {
+          'action_name': 'copy_addon',
+          'message': 'Copying addon...',
+
+          # Explicitly list the inputs in the command-line invocation below:
+          'inputs': [],
+
+          # Declare the expected outputs:
+          'outputs': [
+            '<(addon_output_dir)/<(addon_target_name).node',
+          ],
+
+          # Define the command-line invocation:
+          'action': [
+            'cp',
+            '<(PRODUCT_DIR)/<(addon_target_name).node',
+            '<(addon_output_dir)/<(addon_target_name).node',
+          ],
+        },
+      ], # end actions
+    }, # end target copy_addon
+  ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
new file mode 100644
index 000000000000..ecb77d5161e9
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
@@ -0,0 +1,36 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var normal = require( '@stdlib/random/array/normal' );
+var dztest2 = require( './../lib' );
+
+var x = normal( 1000, 4.0, 2.0, {
+	'dtype': 'float64'
+});
+var y = normal( 800, 3.0, 2.0, {
+	'dtype': 'float64'
+});
+
+var results = new Results();
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, 2.0, x, 1, y, 1, results );
+// returns {...}
+
+console.log( out.toString() );
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/include.gypi b/lib/node_modules/@stdlib/stats/strided/dztest2/include.gypi
new file mode 100644
index 000000000000..ecfaf82a3279
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+  # Define variables to be used throughout the configuration for all targets:
+  'variables': {
+    # Source directory:
+    'src_dir': './src',
+
+    # Include directories:
+    'include_dirs': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).include; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Add-on destination directory:
+    'addon_output_dir': './src',
+
+    # Source files:
+    'src_files': [
+      '<(src_dir)/addon.c',
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).src; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Library dependencies:
+    'libraries': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).libraries; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Library directories:
+    'library_dirs': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).libpath; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+  }, # end variables
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h b/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
new file mode 100644
index 000000000000..312b6ed88b59
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
@@ -0,0 +1,47 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#ifndef STDLIB_STATS_STRIDED_DZTEST2_H
+#define STDLIB_STATS_STRIDED_DZTEST2_H
+
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+#include "stdlib/blas/base/shared.h"
+
+/*
+* If C++, prevent name mangling so that the compiler emits a binary file having undecorated names, thus mirroring the behavior of a C compiler.
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays.
+*/
+void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+*/
+void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // !STDLIB_STATS_STRIDED_DZTEST_H
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
new file mode 100644
index 000000000000..7711cac96418
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
@@ -0,0 +1,67 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './ndarray.js' );
+
+
+// MAIN //
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays.
+*
+* @param {PositiveInteger} NX - number of indexed elements in `x`
+* @param {PositiveInteger} NY - number of indexed elements in `y`
+* @param {(integer|string)} alternative - alternative hypothesis
+* @param {number} alpha - significance level
+* @param {number} diff - difference in means under the null hypothesis
+* @param {PositiveNumber} sigmax - known standard deviation of `x`
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Collection} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {Collection} y - input array
+* @param {integer} strideY - stride length for `y`
+* @param {Object} out - output results object
+* @returns {Object} results object
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*/
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out ) { // eslint-disable-line max-len, max-params
+	return ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, stride2offset( NX, strideX ), y, strideY, stride2offset( NY, strideY ), out ); // eslint-disable-line max-len
+}
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
new file mode 100644
index 000000000000..340b93636da6
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
@@ -0,0 +1,68 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolveEnum = require( '@stdlib/stats/base/ztest/alternative-resolve-enum' );
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays.
+*
+* @param {PositiveInteger} NX - number of indexed elements in `x`
+* @param {PositiveInteger} NY - number of indexed elements in `y`
+* @param {(integer|string)} alternative - alternative hypothesis
+* @param {number} alpha - significance level
+* @param {number} diff - difference in means under the null hypothesis
+* @param {PositiveNumber} sigmax - known standard deviation of `x`
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Collection} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {Collection} y - input array
+* @param {integer} strideY - stride length for `y`
+* @param {Object} out - output results object
+* @returns {Object} results object
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*/
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out ) { // eslint-disable-line max-len, max-params
+	addon( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out.toDataView() ); // eslint-disable-line max-len
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
new file mode 100644
index 000000000000..d13e7fde60e3
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
@@ -0,0 +1,80 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Compute a two-sample Z-test for double-precision floating-point strided arrays.
+*
+* @module @stdlib/stats/strided/dztest2
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+* var dztest2 = require( '@stdlib/stats/strided/dztest2' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+* var dztest2 = require( '@stdlib/stats/strided/dztest2' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*/
+
+// MODULES //
+
+var join = require( 'path' ).join;
+var tryRequire = require( '@stdlib/utils/try-require' );
+var isError = require( '@stdlib/assert/is-error' );
+var main = require( './main.js' );
+
+
+// MAIN //
+
+var dztest2;
+var tmp = tryRequire( join( __dirname, './native.js' ) );
+if ( isError( tmp ) ) {
+	dztest2 = main;
+} else {
+	dztest2 = tmp;
+}
+
+
+// EXPORTS //
+
+module.exports = dztest2;
+
+// exports: { "ndarray": "dztest2.ndarray" }
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/main.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/main.js
new file mode 100644
index 000000000000..218cfef85d07
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/main.js
@@ -0,0 +1,35 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var dztest2 = require( './dztest2.js' );
+var ndarray = require( './ndarray.js' );
+
+
+// MAIN //
+
+setReadOnly( dztest2, 'ndarray', ndarray );
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/native.js
new file mode 100644
index 000000000000..007c4f2ce30c
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/native.js
@@ -0,0 +1,35 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var dztest2 = require( './dztest2.native.js' );
+var ndarray = require( './ndarray.native.js' );
+
+
+// MAIN //
+
+setReadOnly( dztest2, 'ndarray', ndarray );
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
new file mode 100644
index 000000000000..d5bd62e1c840
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
@@ -0,0 +1,161 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolveStr = require( '@stdlib/stats/base/ztest/alternative-resolve-str' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var quantile = require( '@stdlib/stats/base/dists/normal/quantile' ).factory;
+var cdf = require( '@stdlib/stats/base/dists/normal/cdf' ).factory;
+var dmean = require( '@stdlib/stats/strided/dmean' ).ndarray;
+var sqrt = require( '@stdlib/math/base/special/sqrt' );
+var abs = require( '@stdlib/math/base/special/abs' );
+var Float64Array = require( '@stdlib/array/float64' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var NINF = require( '@stdlib/constants/float64/ninf' );
+
+
+// VARIABLES //
+
+var normalCDF = cdf( 0.0, 1.0 );
+var normalQuantile = quantile( 0.0, 1.0 );
+
+// Initialize a workspace for storing confidence intervals:
+var WORKSPACE = new Float64Array( 2 );
+
+
+// MAIN //
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+*
+* @param {PositiveInteger} NX - number of indexed elements in `x`
+* @param {PositiveInteger} NY - number of indexed elements in `y`
+* @param {(integer|string)} alternative - alternative hypothesis
+* @param {number} alpha - significance level
+* @param {number} diff - difference in means under the null hypothesis
+* @param {PositiveNumber} sigmax - known standard deviation of `x`
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Collection} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {NonNegativeInteger} offsetX - starting index for `x`
+* @param {Collection} y - input array
+* @param {integer} strideY - stride length for `y`
+* @param {NonNegativeInteger} offsetY - starting index for `y`
+* @param {Object} out - output results object
+* @returns {Object} results object
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*/
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
+	var pValue;
+	var stderr;
+	var xmean;
+	var ymean;
+	var xvar;
+	var yvar;
+	var stat;
+	var alt;
+	var q;
+
+	alt = resolveStr( alternative );
+	if (
+		NX <= 0 ||
+		NY <= 0 ||
+		isnan( alpha ) ||
+		isnan( diff ) ||
+		isnan( sigmax ) ||
+		isnan( sigmay ) ||
+		sigmax <= 0.0 ||
+		sigmay <= 0.0 ||
+		alpha < 0.0 ||
+		alpha > 1.0
+	) {
+		WORKSPACE[ 0 ] = NaN;
+		WORKSPACE[ 1 ] = NaN;
+		out.rejected = false;
+		out.alternative = alt;
+		out.alpha = NaN;
+		out.pValue = NaN;
+		out.statistic = NaN;
+		out.ci = WORKSPACE;
+		out.nullValue = NaN;
+		out.xmean = NaN;
+		out.ymean = NaN;
+		return out;
+	}
+	// Compute the standard error of the mean:
+	xvar = sigmax * sigmax;
+	yvar = sigmay * sigmay;
+	stderr = sqrt( ( xvar / NX ) + ( yvar / NY ) );
+
+	// Compute the arithmetic means of the input arrays:
+	xmean = dmean( NX, x, strideX, offsetX );
+	ymean = dmean( NY, y, strideY, offsetY );
+
+	// Compute the test statistic (i.e., the z-score, which is the standardized difference between the sample means of x and y, adjusted by the hypothesized difference, in units of the standard error):
+	stat = ( xmean - ymean - diff ) / stderr;
+
+	// Compute the p-value and confidence interval...
+	if ( alt === 'less' ) {
+		pValue = normalCDF( stat );
+		q = normalQuantile( 1.0 - alpha );
+		WORKSPACE[ 0 ] = NINF;
+		WORKSPACE[ 1 ] = diff + ( ( stat + q ) * stderr );
+	} else if ( alt === 'greater' ) {
+		pValue = 1.0 - normalCDF( stat );
+		q = normalQuantile( 1.0 - alpha );
+		WORKSPACE[ 0 ] = diff + ( ( stat - q ) * stderr );
+		WORKSPACE[ 1 ] = PINF;
+	} else { // alt == 'two-sided'
+		pValue = 2.0 * normalCDF( -abs( stat ) );
+		q = normalQuantile( 1.0 - ( alpha / 2.0 ) );
+		WORKSPACE[ 0 ] = diff + ( ( stat - q ) * stderr );
+		WORKSPACE[ 1 ] = diff + ( ( stat + q ) * stderr );
+	}
+	// Return test results:
+	out.rejected = ( pValue <= alpha );
+	out.alpha = alpha;
+	out.pValue = pValue;
+	out.statistic = stat;
+	out.ci = WORKSPACE;
+	out.alternative = alt;
+	out.nullValue = diff;
+	out.xmean = xmean;
+	out.ymean = ymean;
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
new file mode 100644
index 000000000000..774aceffa885
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
@@ -0,0 +1,70 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolveEnum = require( '@stdlib/stats/base/ztest/alternative-resolve-enum' );
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+*
+* @param {PositiveInteger} NX - number of indexed elements in `x`
+* @param {PositiveInteger} NY - number of indexed elements in `y`
+* @param {(integer|string)} alternative - alternative hypothesis
+* @param {number} alpha - significance level
+* @param {number} diff - difference in means under the null hypothesis
+* @param {PositiveNumber} sigmax - known standard deviation of `x`
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Collection} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {NonNegativeInteger} offsetX - starting index for `x`
+* @param {Collection} y - input array
+* @param {integer} strideY - stride length for `y`
+* @param {NonNegativeInteger} offsetY - starting index for `y`
+* @param {Object} out - output results object
+* @returns {Object} results object
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+*
+* var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
+* var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
+*
+* var results = new Results();
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* // returns {...}
+*
+* var bool = ( out === results );
+* // returns true
+*/
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
+	addon.ndarray( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out.toDataView() ); // eslint-disable-line max-len
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = dztest2;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/manifest.json b/lib/node_modules/@stdlib/stats/strided/dztest2/manifest.json
new file mode 100644
index 000000000000..85f7b7c8b9bc
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/manifest.json
@@ -0,0 +1,141 @@
+{
+  "options": {
+    "task": "build",
+    "wasm": false
+  },
+  "fields": [
+    {
+      "field": "src",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "include",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "libraries",
+      "resolve": false,
+      "relative": false
+    },
+    {
+      "field": "libpath",
+      "resolve": true,
+      "relative": false
+    }
+  ],
+  "confs": [
+    {
+      "task": "build",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/napi/export",
+        "@stdlib/napi/argv",
+        "@stdlib/napi/argv-int64",
+        "@stdlib/napi/argv-int32",
+        "@stdlib/napi/argv-double",
+        "@stdlib/napi/argv-dataview-cast",
+        "@stdlib/napi/argv-strided-float64array",
+        "@stdlib/blas/base/shared",
+        "@stdlib/strided/base/stride2offset",
+        "@stdlib/math/base/assert/is-nan",
+        "@stdlib/math/base/special/sqrt",
+        "@stdlib/math/base/special/abs",
+        "@stdlib/stats/strided/dmean",
+        "@stdlib/stats/base/dists/normal/cdf",
+        "@stdlib/stats/base/dists/normal/quantile",
+        "@stdlib/stats/base/ztest/alternatives",
+        "@stdlib/stats/base/ztest/two-sample/results/float64",
+        "@stdlib/constants/float64/pinf",
+        "@stdlib/constants/float64/ninf"
+      ]
+    },
+    {
+      "task": "benchmark",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/strided/base/stride2offset",
+        "@stdlib/math/base/assert/is-nan",
+        "@stdlib/math/base/special/sqrt",
+        "@stdlib/math/base/special/abs",
+        "@stdlib/stats/strided/dmean",
+        "@stdlib/stats/base/dists/normal/cdf",
+        "@stdlib/stats/base/dists/normal/quantile",
+        "@stdlib/stats/base/ztest/alternatives",
+        "@stdlib/stats/base/ztest/two-sample/results/float64",
+        "@stdlib/constants/float64/pinf",
+        "@stdlib/constants/float64/ninf"
+      ]
+    },
+    {
+      "task": "examples",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/strided/base/stride2offset",
+        "@stdlib/math/base/assert/is-nan",
+        "@stdlib/math/base/special/sqrt",
+        "@stdlib/math/base/special/abs",
+        "@stdlib/stats/strided/dmean",
+        "@stdlib/stats/base/dists/normal/cdf",
+        "@stdlib/stats/base/dists/normal/quantile",
+        "@stdlib/stats/base/ztest/alternatives",
+        "@stdlib/stats/base/ztest/two-sample/results/float64",
+        "@stdlib/constants/float64/pinf",
+        "@stdlib/constants/float64/ninf"
+      ]
+    },
+    {
+      "task": "",
+      "wasm": true,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/strided/base/stride2offset",
+        "@stdlib/math/base/assert/is-nan",
+        "@stdlib/math/base/special/sqrt",
+        "@stdlib/math/base/special/abs",
+        "@stdlib/stats/strided/dmean",
+        "@stdlib/stats/base/dists/normal/cdf",
+        "@stdlib/stats/base/dists/normal/quantile",
+        "@stdlib/stats/base/ztest/alternatives",
+        "@stdlib/stats/base/ztest/two-sample/results/float64",
+        "@stdlib/constants/float64/pinf",
+        "@stdlib/constants/float64/ninf"
+      ]
+    }
+  ]
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/package.json b/lib/node_modules/@stdlib/stats/strided/dztest2/package.json
new file mode 100644
index 000000000000..84bb88348b8f
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/package.json
@@ -0,0 +1,76 @@
+{
+  "name": "@stdlib/stats/strided/dztest2",
+  "version": "0.0.0",
+  "description": "Compute a two-sample Z-test for double-precision floating-point strided arrays.",
+  "license": "Apache-2.0",
+  "author": {
+    "name": "The Stdlib Authors",
+    "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+  },
+  "contributors": [
+    {
+      "name": "The Stdlib Authors",
+      "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+    }
+  ],
+  "main": "./lib",
+  "browser": "./lib/main.js",
+  "gypfile": true,
+  "directories": {
+    "benchmark": "./benchmark",
+    "doc": "./docs",
+    "example": "./examples",
+    "include": "./include",
+    "lib": "./lib",
+    "src": "./src",
+    "test": "./test"
+  },
+  "types": "./docs/types",
+  "scripts": {},
+  "homepage": "https://github.com/stdlib-js/stdlib",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/stdlib-js/stdlib.git"
+  },
+  "bugs": {
+    "url": "https://github.com/stdlib-js/stdlib/issues"
+  },
+  "dependencies": {},
+  "devDependencies": {},
+  "engines": {
+    "node": ">=0.10.0",
+    "npm": ">2.7.0"
+  },
+  "os": [
+    "aix",
+    "darwin",
+    "freebsd",
+    "linux",
+    "macos",
+    "openbsd",
+    "sunos",
+    "win32",
+    "windows"
+  ],
+  "keywords": [
+    "stdlib",
+    "stdmath",
+    "statistics",
+    "stats",
+    "mathematics",
+    "math",
+    "strided",
+    "strided array",
+    "typed",
+    "array",
+    "float64",
+    "double",
+    "float64array",
+    "ztest",
+    "z-test",
+    "hypothesis",
+    "testing",
+    "normality"
+  ],
+  "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/Makefile b/lib/node_modules/@stdlib/stats/strided/dztest2/src/Makefile
new file mode 100644
index 000000000000..7733b6180cb4
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+
+# RULES #
+
+#/
+# Removes generated files for building an add-on.
+#
+# @example
+# make clean-addon
+#/
+clean-addon:
+	$(QUIET) -rm -f *.o *.node
+
+.PHONY: clean-addon
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean: clean-addon
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
new file mode 100644
index 000000000000..cccf359fa310
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
@@ -0,0 +1,83 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/strided/dztest2.h"
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/napi/export.h"
+#include "stdlib/napi/argv.h"
+#include "stdlib/napi/argv_int64.h"
+#include "stdlib/napi/argv_int32.h"
+#include "stdlib/napi/argv_strided_float64array.h"
+#include "stdlib/napi/argv_dataview_cast.h"
+#include "stdlib/napi/argv_double.h"
+#include <node_api.h>
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env    environment under which the function is invoked
+* @param info   callback data
+* @return       Node-API value
+*/
+static napi_value addon( napi_env env, napi_callback_info info ) {
+	STDLIB_NAPI_ARGV( env, info, argv, argc, 12 );
+	STDLIB_NAPI_ARGV_INT64( env, NX, argv, 0 );
+	STDLIB_NAPI_ARGV_INT64( env, NY, argv, 1 );
+	STDLIB_NAPI_ARGV_INT32( env, alternative, argv, 2 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, alpha, argv, 3 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, diff, argv, 4 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmax, argv, 5 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 6 );
+	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 8 );
+	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 9 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 7 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 10 );
+	STDLIB_NAPI_ARGV_DATAVIEW_CAST( env, results, struct stdlib_stats_ztest_two_sample_float64_results, argv, 11 );
+	API_SUFFIX(stdlib_strided_dztest2)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, Y, strideY, results );
+	return NULL;
+}
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env    environment under which the function is invoked
+* @param info   callback data
+* @return       Node-API value
+*/
+static napi_value addon_method( napi_env env, napi_callback_info info ) {
+	STDLIB_NAPI_ARGV( env, info, argv, argc, 14 );
+	STDLIB_NAPI_ARGV_INT64( env, NX, argv, 0 );
+	STDLIB_NAPI_ARGV_INT64( env, NY, argv, 1 );
+	STDLIB_NAPI_ARGV_INT32( env, alternative, argv, 2 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, alpha, argv, 3 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, diff, argv, 4 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmax, argv, 5 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 6 );
+	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 8 );
+	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 11 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 7 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 10 );
+	STDLIB_NAPI_ARGV_INT64( env, offsetX, argv, 9 );
+	STDLIB_NAPI_ARGV_INT64( env, offsetY, argv, 12 );
+	STDLIB_NAPI_ARGV_DATAVIEW_CAST( env, results, struct stdlib_stats_ztest_two_sample_float64_results, argv, 13 );
+	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, offsetX, Y, strideY, offsetY, results );
+	return NULL;
+}
+
+STDLIB_NAPI_MODULE_EXPORT_FCN_WITH_METHOD( addon, "ndarray", addon_method )
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
new file mode 100644
index 000000000000..5bd6d54839c3
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
@@ -0,0 +1,152 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/strided/dztest2.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/strided/base/stride2offset.h"
+#include "stdlib/stats/strided/dmean.h"
+#include "stdlib/math/base/assert/is_nan.h"
+#include "stdlib/math/base/special/sqrt.h"
+#include "stdlib/math/base/special/abs.h"
+#include "stdlib/stats/base/dists/normal/cdf.h"
+#include "stdlib/stats/base/dists/normal/quantile.h"
+#include "stdlib/constants/float64/pinf.h"
+#include "stdlib/constants/float64/ninf.h"
+#include <stdbool.h>
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays.
+*
+* @param NX           number of indexed elements
+* @param NY           number of indexed elements
+* @param alternative  alternative hypothesis
+* @param alpha        significance level
+* @param diff         mean under the null hypothesis
+* @param sigmax       known standard deviation
+* @param sigmay       known standard deviation
+* @param X            input array
+* @param strideX      stride length
+* @param Y            input array
+* @param strideY      stride length
+* @param results      output results object
+*/
+void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
+	const CBLAS_INT ox = stdlib_strided_stride2offset( NX, strideX );
+	const CBLAS_INT oy = stdlib_strided_stride2offset( NY, strideY );
+	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, ox, Y, strideY, oy, results );
+}
+
+/**
+* Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
+*
+* @param NX           number of indexed elements in `x`
+* @param NY           number of indexed elements in `y`
+* @param alternative  alternative hypothesis
+* @param alpha        significance level
+* @param diff         mean under the null hypothesis
+* @param sigmax       known standard deviation of `x`
+* @param sigmay       known standard deviation of `x`
+* @param X            input array
+* @param strideX      stride length for `x`
+* @param offsetX      starting index for `x`
+* @param Y            input array
+* @param strideY      stride length for `y`
+* @param offsetY      starting index for `y`
+* @param results      output results object
+*/
+void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
+	double pValue;
+	double stderr;
+	double xmean;
+	double ymean;
+	double xvar;
+	double yvar;
+	double stat;
+	double *ci;
+	double q;
+
+	if (
+		NX <= 0 ||
+		NY <= 0 ||
+		stdlib_base_is_nan( alpha ) ||
+		stdlib_base_is_nan( diff ) ||
+		stdlib_base_is_nan( sigmax ) ||
+		stdlib_base_is_nan( sigmay ) ||
+		sigmax <= 0.0 ||
+		sigmay <= 0.0 ||
+		alpha < 0.0 ||
+		alpha > 1.0
+	) {
+		results->rejected = false;
+		results->alternative = alternative;
+
+		// Set all applicable fields to NaN...
+		results->alpha = 0.0/0.0;
+		results->pValue = 0.0/0.0;
+		results->statistic = 0.0/0.0;
+		results->ci[ 0 ] = 0.0/0.0;
+		results->ci[ 1 ] = 0.0/0.0;
+		results->nullValue = 0.0/0.0;
+		results->xmean = 0.0/0.0;
+		results->ymean = 0.0/0.0;
+		return;
+	}
+	// Resolve the array for storing the confidence interval:
+	ci = results->ci;
+
+	// Compute the standard error of the mean:
+	xvar = sigmax * sigmay;
+	yvar = sigmay * sigmay;
+	stderr = stdlib_base_sqrt( ( xvar / (double)NX ) + ( yvar / (double)NY ) );
+
+	// Compute the arithmetic mean of the input arrays:
+	xmean = stdlib_strided_dmean_ndarray( NX, X, strideX, offsetX );
+	ymean = stdlib_strided_dmean_ndarray( NY, Y, strideY, offsetY );
+
+	// Compute the test statistic (i.e., the z-score, which is the standardized difference between the sample means of x and y, adjusted by the hypothesized difference, in units of the standard error):
+	stat = ( xmean - ymean - diff ) / stderr;
+
+	// Compute the p-value and confidence interval...
+	if ( alternative == STDLIB_STATS_ZTEST_LESS ) {
+		pValue = stdlib_base_dists_normal_cdf( stat, 0.0, 1.0 );
+		q = stdlib_base_dists_normal_quantile( 1.0-alpha, 0.0, 1.0 );
+		ci[ 0 ] = STDLIB_CONSTANT_FLOAT64_NINF;
+		ci[ 1 ] = diff + ( (stat+q)*stderr );
+	} else if ( alternative == STDLIB_STATS_ZTEST_GREATER ) {
+		pValue = 1.0 - stdlib_base_dists_normal_cdf( stat, 0.0, 1.0 );
+		q = stdlib_base_dists_normal_quantile( 1.0-alpha, 0.0, 1.0 );
+		ci[ 0 ] = diff + ( (stat-q)*stderr );
+		ci[ 1 ] = STDLIB_CONSTANT_FLOAT64_PINF;
+	} else { // alternative == STDLIB_STATS_ZTEST_TWO_SIDED
+		pValue = 2.0 * stdlib_base_dists_normal_cdf( -stdlib_base_abs( stat ), 0.0, 1.0 );
+		q = stdlib_base_dists_normal_quantile( 1.0-(alpha/2.0), 0.0, 1.0 );
+		ci[ 0 ] = diff + ( (stat-q)*stderr );
+		ci[ 1 ] = diff + ( (stat+q)*stderr );
+	}
+	// Store test results:
+	results->rejected = ( pValue <= alpha );
+	results->alternative = alternative;
+	results->alpha = alpha;
+	results->pValue = pValue;
+	results->statistic = stat;
+	results->nullValue = diff;
+	results->xmean = xmean;
+	results->ymean = ymean;
+}

From 6d2c29f3ef59dee4553fb41fd19c4b42c861f0a9 Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Mon, 7 Jul 2025 18:18:18 +0000
Subject: [PATCH 2/7] feat: add C examples

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: missing_dependencies
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 .../stats/strided/dztest2/examples/c/Makefile | 146 ++++++++++++++++++
 .../strided/dztest2/examples/c/example.c      |  57 +++++++
 2 files changed, 203 insertions(+)
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/Makefile
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/Makefile b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/Makefile
new file mode 100644
index 000000000000..25ced822f96a
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+	CC := $(C_COMPILER)
+else
+	CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+	-std=c99 \
+	-O3 \
+	-Wall \
+	-pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+	fPIC ?=
+else
+	fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+	$(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+	$(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+	$(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c
new file mode 100644
index 000000000000..14275f526f46
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c
@@ -0,0 +1,57 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/strided/dztest2.h"
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+#include <stdbool.h>
+#include <stdio.h>
+
+int main( void ) {
+	// Create a strided arrays:
+	const double x[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
+	const double y[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
+
+	// Specify the number of elements:
+	const int NX = 4;
+	const int NY = 4;
+
+	// Specify the stride lengths:
+	const int strideX = 2;
+	const int strideY = 2;
+
+	// Initialize a results object:
+	struct stdlib_stats_ztest_two_sample_float64_results results = {
+		.rejected = false,
+		.alpha = 0.0,
+		.alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+		.pValue = 0.0,
+		.statistic = 0.0,
+		.ci = { 0.0, 0.0 },
+		.nullValue = 0.0,
+		.xmean = 0.0,
+		.ymean = 0.0
+	};
+
+	// Compute a Z-test:
+	stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, 3.0, x, strideX, y, strideY, &results );
+
+	// Print the result:
+	printf( "Statistic: %lf\n", results.statistic );
+	printf( "Null hypothesis was %s\n", ( results.rejected ) ? "rejected" : "not rejected" );
+}

From da1f089ed273fed55de570e61929da5a954f6645 Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Wed, 9 Jul 2025 06:51:27 +0000
Subject: [PATCH 3/7] fix: correct argument indexing

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: missing_dependencies
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
index cccf359fa310..c1c50ddc3061 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
@@ -45,9 +45,9 @@ static napi_value addon( napi_env env, napi_callback_info info ) {
 	STDLIB_NAPI_ARGV_DOUBLE( env, sigmax, argv, 5 );
 	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 6 );
 	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 8 );
-	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 9 );
+	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 10 );
 	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 7 );
-	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 10 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 9 );
 	STDLIB_NAPI_ARGV_DATAVIEW_CAST( env, results, struct stdlib_stats_ztest_two_sample_float64_results, argv, 11 );
 	API_SUFFIX(stdlib_strided_dztest2)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, Y, strideY, results );
 	return NULL;

From 79c85fb81c8b02a8aa38cbd1551cd8a74967e91f Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Wed, 9 Jul 2025 07:29:19 +0000
Subject: [PATCH 4/7] fix: update parameter type

---
 lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js | 4 ++--
 .../@stdlib/stats/strided/dztest2/lib/dztest2.native.js       | 4 ++--
 lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js | 4 ++--
 .../@stdlib/stats/strided/dztest2/lib/ndarray.native.js       | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
index 7711cac96418..c99059f53b42 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
@@ -36,9 +36,9 @@ var ndarray = require( './ndarray.js' );
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
 * @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Collection} x - input array
+* @param {Float64Array} x - input array
 * @param {integer} strideX - stride length for `x`
-* @param {Collection} y - input array
+* @param {Float64Array} y - input array
 * @param {integer} strideY - stride length for `y`
 * @param {Object} out - output results object
 * @returns {Object} results object
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
index 340b93636da6..2c788671984b 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
@@ -36,9 +36,9 @@ var addon = require( './../src/addon.node' );
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
 * @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Collection} x - input array
+* @param {Float64Array} x - input array
 * @param {integer} strideX - stride length for `x`
-* @param {Collection} y - input array
+* @param {Float64Array} y - input array
 * @param {integer} strideY - stride length for `y`
 * @param {Object} out - output results object
 * @returns {Object} results object
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
index d5bd62e1c840..159ee3e56d19 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
@@ -53,10 +53,10 @@ var WORKSPACE = new Float64Array( 2 );
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
 * @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Collection} x - input array
+* @param {Float64Array} x - input array
 * @param {integer} strideX - stride length for `x`
 * @param {NonNegativeInteger} offsetX - starting index for `x`
-* @param {Collection} y - input array
+* @param {Float64Array} y - input array
 * @param {integer} strideY - stride length for `y`
 * @param {NonNegativeInteger} offsetY - starting index for `y`
 * @param {Object} out - output results object
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
index 774aceffa885..e01d0448b781 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
@@ -36,10 +36,10 @@ var addon = require( './../src/addon.node' );
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
 * @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Collection} x - input array
+* @param {Float64Array} x - input array
 * @param {integer} strideX - stride length for `x`
 * @param {NonNegativeInteger} offsetX - starting index for `x`
-* @param {Collection} y - input array
+* @param {Float64Array} y - input array
 * @param {integer} strideY - stride length for `y`
 * @param {NonNegativeInteger} offsetY - starting index for `y`
 * @param {Object} out - output results object

From 7fa3913ef4612526cf197e83de5eed04bf7ad5ba Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Fri, 11 Jul 2025 08:41:37 +0000
Subject: [PATCH 5/7] refactor: update parameter orders

---
 .../@stdlib/stats/strided/dztest2/README.md   | 52 +++++++++----------
 .../strided/dztest2/examples/c/example.c      |  2 +-
 .../stats/strided/dztest2/examples/index.js   |  2 +-
 .../include/stdlib/stats/strided/dztest2.h    |  4 +-
 .../stats/strided/dztest2/lib/dztest2.js      | 12 ++---
 .../strided/dztest2/lib/dztest2.native.js     | 12 ++---
 .../stats/strided/dztest2/lib/index.js        |  4 +-
 .../stats/strided/dztest2/lib/ndarray.js      | 10 ++--
 .../strided/dztest2/lib/ndarray.native.js     | 12 ++---
 .../@stdlib/stats/strided/dztest2/src/addon.c | 18 +++----
 .../@stdlib/stats/strided/dztest2/src/main.c  | 20 +++----
 11 files changed, 74 insertions(+), 74 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/README.md b/lib/node_modules/@stdlib/stats/strided/dztest2/README.md
index a78d4ecee956..36ef7ec63ae3 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/README.md
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/README.md
@@ -46,7 +46,7 @@ Here, `μX` and `μY` are the true population means of samples `X` and `Y`, resp
 var dztest2 = require( '@stdlib/stats/strided/dztest2' );
 ```
 
-#### dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out )
+#### dztest2( NX, NY, alternative, alpha, diff, sigmax, x, strideX, sigmay, y, strideY, out )
 
 Computes a two-sample Z-test for double-precision floating-point strided arrays.
 
@@ -58,7 +58,7 @@ var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
 var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 
 var results = new Results();
-var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 2.0, y, 1, results );
 // returns {...}
 
 var bool = ( out === results );
@@ -73,14 +73,14 @@ The function has the following parameters:
 -   **alpha**: significance level.
 -   **diff**: difference in means under the null hypothesis.
 -   **sigmax**: known standard deviation of `x`.
--   **sigmay**: known standard deviation of `y`.
--   **x**: input [`Float64Array`][@stdlib/array/float64].
+-   **x**: first input [`Float64Array`][@stdlib/array/float64].
 -   **strideX**: stride length for `x`.
--   **y**: input [`Float64Array`][@stdlib/array/float64].
+-   **sigmay**: known standard deviation of `y`.
+-   **y**: second input [`Float64Array`][@stdlib/array/float64].
 -   **strideY**: stride length for `y`.
 -   **out**: output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
 
-The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to perform a two-sample Z-test over every other element in `x` and `y`,
+The `N` and stride parameters determine which elements in the strided arrays are accessed at runtime. For example, to perform a two-sample Z-test over every other element in `x` and `y`,
 
 ```javascript
 var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
@@ -90,7 +90,7 @@ var x = new Float64Array( [ 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0, 0.0 ] )
 var y = new Float64Array( [ 3.0, 0.0, 3.0, 0.0, 5.0, 0.0, 7.0, 0.0, 7.0, 0.0 ] );
 
 var results = new Results();
-var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 2, y, 2, results );
+var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, x, 2, 2.0, y, 2, results );
 // returns {...}
 
 var bool = ( out === results );
@@ -112,14 +112,14 @@ var y0 = new Float64Array( [ 0.0, 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 var y1 = new Float64Array( y0.buffer, y0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
 
 var results = new Results();
-var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x1, 1, y1, 1, results );
+var out = dztest2( 5, 5, 'two-sided', 0.05, 0.0, 1.0, x1, 1, 2.0, y1, 1, results );
 // returns {...}
 
 var bool = ( out === results );
 // returns true
 ```
 
-#### dztest2.ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out )
+#### dztest2.ndarray( NX, NY, alternative, alpha, diff, sigmax, x, strideX, offsetX, sigmay, y, strideY, offsetY, out )
 
 Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
 
@@ -131,7 +131,7 @@ var x = new Float64Array( [ 4.0, 4.0, 6.0, 6.0, 5.0 ] );
 var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 
 var results = new Results();
-var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 2.0, y, 1, 0, results );
 // returns {...}
 
 var bool = ( out === results );
@@ -153,7 +153,7 @@ var x = new Float64Array( [ 0.0, 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0 ] )
 var y = new Float64Array( [ 0.0, 3.0, 0.0, 3.0, 0.0, 5.0, 0.0, 7.0, 0.0, 7.0 ] );
 
 var results = new Results();
-var out = dztest2.ndarray( 5, 5, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 2, 1, y, 2, 1, results );
+var out = dztest2.ndarray( 5, 5, 'two-sided', 0.05, 0.0, 1.0, x, 2, 1, 2.0, y, 2, 1, results );
 // returns {...}
 
 var bool = ( out === results );
@@ -168,7 +168,7 @@ var bool = ( out === results );
 
 ## Notes
 
--   As a general rule of thumb, a Z-test is most reliable when `N >= 50`. For smaller sample sizes or when the standard deviation is unknown, prefer a t-test.
+-   As a general rule of thumb, a Z-test is most reliable when `N >= 50`. For smaller sample sizes or when the standard deviations are unknown, prefer a t-test.
 
 </section>
 
@@ -193,7 +193,7 @@ var y = normal( 800, 3.0, 2.0, {
 });
 
 var results = new Results();
-var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, 2.0, x, 1, y, 1, results );
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, x, 1, 2.0, y, 1, results );
 // returns {...}
 
 console.log( out.toString() );
@@ -229,7 +229,7 @@ console.log( out.toString() );
 #include "stdlib/stats/strided/dztest2.h"
 ```
 
-#### stdlib_strided_dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, \*X, strideX, \*Y, strideY, \*results )
+#### stdlib_strided_dztest2( NX, NY, alternative, alpha, diff, sigmax, \*X, strideX, sigmay, \*Y, strideY, \*results )
 
 Computes a two-sample Z-test for double-precision floating-point strided arrays.
 
@@ -252,7 +252,7 @@ struct stdlib_stats_ztest_two_sample_float64_results results = {
 const double x[] = { 4.0, 4.0, 6.0, 6.0, 5.0 };
 const double y[] = { 3.0, 3.0, 5.0, 7.0, 7.0 };
 
-stdlib_strided_dztest2( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, &results );
+stdlib_strided_dztest2( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, x, 1, 2.0, y, 1, &results );
 ```
 
 The function accepts the following arguments:
@@ -263,18 +263,18 @@ The function accepts the following arguments:
 -   **alpha**: `[in] double` significance level.
 -   **diff**: `[in] double` difference in means under the null hypothesis.
 -   **sigmax** `[in] double` known standard deviation of `x`.
--   **sigmay** `[in] double` known standard deviation of `y`.
--   **X**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **X**: `[in] double*` first input [`Float64Array`][@stdlib/array/float64].
 -   **strideX**: `[in] CBLAS_INT` stride length for `X`.
--   **Y**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **sigmay** `[in] double` known standard deviation of `y`.
+-   **Y**: `[in] double*` second input [`Float64Array`][@stdlib/array/float64].
 -   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
 -   **results**: `[out] struct stdlib_stats_ztest_two_sample_results_float64*` output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
 
 ```c
-void stdlib_strided_dztest2( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+void stdlib_strided_dztest2( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const double sigmay, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
 ```
 
-#### stdlib_strided_dztest2_ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, \*X, strideX, offsetX, \*Y, strideY, offsetY, \*results )
+#### stdlib_strided_dztest2_ndarray( NX, NY, alternative, alpha, diff, sigmax, \*X, strideX, offsetX, sigmay, \*Y, strideY, offsetY, \*results )
 
 Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
 
@@ -297,7 +297,7 @@ struct stdlib_stats_ztest_two_sample_float64_results results = {
 const double x[] = { 4.0, 4.0, 6.0, 6.0, 5.0 };
 const double y[] = { 3.0, 3.0, 5.0, 7.0, 7.0 };
 
-stdlib_strided_dztest2_ndarray( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, &results );
+stdlib_strided_dztest2_ndarray( 5, 5, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, x, 1, 0, 2.0, y, 1, 0, &results );
 ```
 
 The function accepts the following arguments:
@@ -308,17 +308,17 @@ The function accepts the following arguments:
 -   **alpha**: `[in] double` significance level.
 -   **diff**: `[in] double` difference in means under the null hypothesis.
 -   **sigmax** `[in] double` known standard deviation of `x`.
--   **sigmay** `[in] double` known standard deviation of `y`.
--   **X**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **X**: `[in] double*` first input [`Float64Array`][@stdlib/array/float64].
 -   **strideX**: `[in] CBLAS_INT` stride length for `X`.
 -   **offsetX**: `[in] CBLAS_INT` starting index for `X`.
--   **Y**: `[in] double*` input [`Float64Array`][@stdlib/array/float64].
+-   **sigmay** `[in] double` known standard deviation of `y`.
+-   **Y**: `[in] double*` second input [`Float64Array`][@stdlib/array/float64].
 -   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
 -   **offsetY**: `[in] CBLAS_INT` starting index for `Y`.
 -   **results**: `[out] struct stdlib_stats_ztest_two_sample_results_float64*` output [results object][@stdlib/stats/base/ztest/two-sample/results/float64].
 
 ```c
-void stdlib_strided_dztest2_ndarray( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+void stdlib_strided_dztest2_ndarray( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double sigmay, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
 ```
 
 </section>
@@ -373,7 +373,7 @@ int main( void ) {
     };
 
     // Compute a Z-test:
-    stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, 3.0, x, strideX, y, strideY, &results );
+    stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, x, strideX, 3.0, y, strideY, &results );
 
     // Print the result:
     printf( "Statistic: %lf\n", results.statistic );
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c
index 14275f526f46..003d039e7a96 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/c/example.c
@@ -49,7 +49,7 @@ int main( void ) {
 	};
 
 	// Compute a Z-test:
-	stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, 3.0, x, strideX, y, strideY, &results );
+	stdlib_strided_dztest2( NX, NY, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 5.0, 3.0, x, strideX, 3.0, y, strideY, &results );
 
 	// Print the result:
 	printf( "Statistic: %lf\n", results.statistic );
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
index ecb77d5161e9..0a87ce821511 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/examples/index.js
@@ -30,7 +30,7 @@ var y = normal( 800, 3.0, 2.0, {
 });
 
 var results = new Results();
-var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, 2.0, x, 1, y, 1, results );
+var out = dztest2( x.length, y.length, 'two-sided', 0.05, 1.0, 2.0, x, 1, 2.0, y, 1, results );
 // returns {...}
 
 console.log( out.toString() );
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h b/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
index 312b6ed88b59..d7560b61e15f 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/include/stdlib/stats/strided/dztest2.h
@@ -33,12 +33,12 @@ extern "C" {
 /**
 * Computes a two-sample Z-test for double-precision floating-point strided arrays.
 */
-void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const double sigmay, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results );
 
 /**
 * Computes a two-sample Z-test for double-precision floating-point strided arrays using alternative indexing semantics.
 */
-void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
+void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double sigmay, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results );
 
 #ifdef __cplusplus
 }
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
index c99059f53b42..251e373277ae 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.js
@@ -35,10 +35,10 @@ var ndarray = require( './ndarray.js' );
 * @param {number} alpha - significance level
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
-* @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Float64Array} x - input array
+* @param {Float64Array} x - first input array
 * @param {integer} strideX - stride length for `x`
-* @param {Float64Array} y - input array
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Float64Array} y - second input array
 * @param {integer} strideY - stride length for `y`
 * @param {Object} out - output results object
 * @returns {Object} results object
@@ -51,14 +51,14 @@ var ndarray = require( './ndarray.js' );
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 2.0, y, 1, results );
 * // returns {...}
 *
 * var bool = ( out === results );
 * // returns true
 */
-function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out ) { // eslint-disable-line max-len, max-params
-	return ndarray( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, stride2offset( NX, strideX ), y, strideY, stride2offset( NY, strideY ), out ); // eslint-disable-line max-len
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, x, strideX, sigmay, y, strideY, out ) { // eslint-disable-line max-len, max-params
+	return ndarray( NX, NY, alternative, alpha, diff, sigmax, x, strideX, stride2offset( NX, strideX ), sigmay, y, strideY, stride2offset( NY, strideY ), out ); // eslint-disable-line max-len
 }
 
 
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
index 2c788671984b..1b840e865aba 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/dztest2.native.js
@@ -35,10 +35,10 @@ var addon = require( './../src/addon.node' );
 * @param {number} alpha - significance level
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
-* @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Float64Array} x - input array
+* @param {Float64Array} x - first input array
 * @param {integer} strideX - stride length for `x`
-* @param {Float64Array} y - input array
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Float64Array} y - second input array
 * @param {integer} strideY - stride length for `y`
 * @param {Object} out - output results object
 * @returns {Object} results object
@@ -51,14 +51,14 @@ var addon = require( './../src/addon.node' );
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 2.0, y, 1, results );
 * // returns {...}
 *
 * var bool = ( out === results );
 * // returns true
 */
-function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out ) { // eslint-disable-line max-len, max-params
-	addon( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, sigmay, x, strideX, y, strideY, out.toDataView() ); // eslint-disable-line max-len
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, x, strideX, sigmay, y, strideY, out ) { // eslint-disable-line max-len, max-params
+	addon( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, x, strideX, sigmay, y, strideY, out.toDataView() ); // eslint-disable-line max-len
 	return out;
 }
 
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
index d13e7fde60e3..2720bd1bfc87 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/index.js
@@ -32,7 +32,7 @@
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, y, 1, results );
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 2.0, y, 1, results );
 * // returns {...}
 *
 * var bool = ( out === results );
@@ -47,7 +47,7 @@
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* var out = dztest2.ndarray( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 2.0, y, 1, 0, results );
 * // returns {...}
 *
 * var bool = ( out === results );
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
index 159ee3e56d19..b489e83010a0 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.js
@@ -52,11 +52,11 @@ var WORKSPACE = new Float64Array( 2 );
 * @param {number} alpha - significance level
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
-* @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Float64Array} x - input array
+* @param {Float64Array} x - first input array
 * @param {integer} strideX - stride length for `x`
 * @param {NonNegativeInteger} offsetX - starting index for `x`
-* @param {Float64Array} y - input array
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Float64Array} y - second input array
 * @param {integer} strideY - stride length for `y`
 * @param {NonNegativeInteger} offsetY - starting index for `y`
 * @param {Object} out - output results object
@@ -70,13 +70,13 @@ var WORKSPACE = new Float64Array( 2 );
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 2.0, y, 1, 0, results );
 * // returns {...}
 *
 * var bool = ( out === results );
 * // returns true
 */
-function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, x, strideX, offsetX, sigmay, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
 	var pValue;
 	var stderr;
 	var xmean;
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
index e01d0448b781..6817ea75daf5 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/lib/ndarray.native.js
@@ -35,11 +35,11 @@ var addon = require( './../src/addon.node' );
 * @param {number} alpha - significance level
 * @param {number} diff - difference in means under the null hypothesis
 * @param {PositiveNumber} sigmax - known standard deviation of `x`
-* @param {PositiveNumber} sigmay - known standard deviation of `y`
-* @param {Float64Array} x - input array
+* @param {Float64Array} x - first input array
 * @param {integer} strideX - stride length for `x`
 * @param {NonNegativeInteger} offsetX - starting index for `x`
-* @param {Float64Array} y - input array
+* @param {PositiveNumber} sigmay - known standard deviation of `y`
+* @param {Float64Array} y - second input array
 * @param {integer} strideY - stride length for `y`
 * @param {NonNegativeInteger} offsetY - starting index for `y`
 * @param {Object} out - output results object
@@ -53,14 +53,14 @@ var addon = require( './../src/addon.node' );
 * var y = new Float64Array( [ 3.0, 3.0, 5.0, 7.0, 7.0 ] );
 *
 * var results = new Results();
-* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, 2.0, x, 1, 0, y, 1, 0, results );
+* var out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 2.0, y, 1, 0, results );
 * // returns {...}
 *
 * var bool = ( out === results );
 * // returns true
 */
-function dztest2( NX, NY, alternative, alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
-	addon.ndarray( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, sigmay, x, strideX, offsetX, y, strideY, offsetY, out.toDataView() ); // eslint-disable-line max-len
+function dztest2( NX, NY, alternative, alpha, diff, sigmax, x, strideX, offsetX, sigmay, y, strideY, offsetY, out ) { // eslint-disable-line max-len, max-params
+	addon.ndarray( NX, NY, resolveEnum( alternative ), alpha, diff, sigmax, x, strideX, offsetX, sigmay, y, strideY, offsetY, out.toDataView() ); // eslint-disable-line max-len
 	return out;
 }
 
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
index c1c50ddc3061..4c6824d0de1a 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/addon.c
@@ -43,13 +43,13 @@ static napi_value addon( napi_env env, napi_callback_info info ) {
 	STDLIB_NAPI_ARGV_DOUBLE( env, alpha, argv, 3 );
 	STDLIB_NAPI_ARGV_DOUBLE( env, diff, argv, 4 );
 	STDLIB_NAPI_ARGV_DOUBLE( env, sigmax, argv, 5 );
-	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 6 );
-	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 8 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 8 );
+	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 7 );
 	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 10 );
-	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 7 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 6 );
 	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 9 );
 	STDLIB_NAPI_ARGV_DATAVIEW_CAST( env, results, struct stdlib_stats_ztest_two_sample_float64_results, argv, 11 );
-	API_SUFFIX(stdlib_strided_dztest2)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, Y, strideY, results );
+	API_SUFFIX(stdlib_strided_dztest2)( NX, NY, alternative, alpha, diff, sigmax, X, strideX, sigmay, Y, strideY, results );
 	return NULL;
 }
 
@@ -68,15 +68,15 @@ static napi_value addon_method( napi_env env, napi_callback_info info ) {
 	STDLIB_NAPI_ARGV_DOUBLE( env, alpha, argv, 3 );
 	STDLIB_NAPI_ARGV_DOUBLE( env, diff, argv, 4 );
 	STDLIB_NAPI_ARGV_DOUBLE( env, sigmax, argv, 5 );
-	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 6 );
-	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 8 );
+	STDLIB_NAPI_ARGV_DOUBLE( env, sigmay, argv, 9 );
+	STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 7 );
 	STDLIB_NAPI_ARGV_INT64( env, strideY, argv, 11 );
-	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 7 );
+	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, NX, strideX, argv, 6 );
 	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Y, NY, strideY, argv, 10 );
-	STDLIB_NAPI_ARGV_INT64( env, offsetX, argv, 9 );
+	STDLIB_NAPI_ARGV_INT64( env, offsetX, argv, 8 );
 	STDLIB_NAPI_ARGV_INT64( env, offsetY, argv, 12 );
 	STDLIB_NAPI_ARGV_DATAVIEW_CAST( env, results, struct stdlib_stats_ztest_two_sample_float64_results, argv, 13 );
-	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, offsetX, Y, strideY, offsetY, results );
+	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, X, strideX, offsetX, sigmay, Y, strideY, offsetY, results );
 	return NULL;
 }
 
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
index 5bd6d54839c3..13c09e0ee2db 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
@@ -40,17 +40,17 @@
 * @param alpha        significance level
 * @param diff         mean under the null hypothesis
 * @param sigmax       known standard deviation
-* @param sigmay       known standard deviation
-* @param X            input array
+* @param X            first input array
 * @param strideX      stride length
-* @param Y            input array
+* @param sigmay       known standard deviation
+* @param Y            second input array
 * @param strideY      stride length
 * @param results      output results object
 */
-void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
+void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const double sigmay, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
 	const CBLAS_INT ox = stdlib_strided_stride2offset( NX, strideX );
 	const CBLAS_INT oy = stdlib_strided_stride2offset( NY, strideY );
-	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, sigmay, X, strideX, ox, Y, strideY, oy, results );
+	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, X, strideX, sigmay, ox, Y, strideY, oy, results );
 }
 
 /**
@@ -62,16 +62,16 @@ void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY,
 * @param alpha        significance level
 * @param diff         mean under the null hypothesis
 * @param sigmax       known standard deviation of `x`
-* @param sigmay       known standard deviation of `x`
-* @param X            input array
+* @param X            first input array
 * @param strideX      stride length for `x`
 * @param offsetX      starting index for `x`
-* @param Y            input array
+* @param sigmay       known standard deviation of `x`
+* @param Y            second input array
 * @param strideY      stride length for `y`
 * @param offsetY      starting index for `y`
 * @param results      output results object
 */
-void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double sigmay, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
+void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, const double sigmay, const double *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
 	double pValue;
 	double stderr;
 	double xmean;
@@ -116,7 +116,7 @@ void API_SUFFIX(stdlib_strided_dztest2_ndarray)( const CBLAS_INT NX, const CBLAS
 	yvar = sigmay * sigmay;
 	stderr = stdlib_base_sqrt( ( xvar / (double)NX ) + ( yvar / (double)NY ) );
 
-	// Compute the arithmetic mean of the input arrays:
+	// Compute the arithmetic means of the input arrays:
 	xmean = stdlib_strided_dmean_ndarray( NX, X, strideX, offsetX );
 	ymean = stdlib_strided_dmean_ndarray( NY, Y, strideY, offsetY );
 

From eeb29b02d5bc814cebde19f9d524ee6a50c50dbb Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Fri, 11 Jul 2025 10:22:02 +0000
Subject: [PATCH 6/7] fix: correct parameter order

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: missing_dependencies
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
index 13c09e0ee2db..ca0e9d263db7 100644
--- a/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/src/main.c
@@ -50,7 +50,7 @@
 void API_SUFFIX(stdlib_strided_dztest2)( const CBLAS_INT NX, const CBLAS_INT NY, const enum STDLIB_STATS_ZTEST_ALTERNATIVE alternative, const double alpha, const double diff, const double sigmax, const double *X, const CBLAS_INT strideX, const double sigmay, const double *Y, const CBLAS_INT strideY, struct stdlib_stats_ztest_two_sample_float64_results *results ) {
 	const CBLAS_INT ox = stdlib_strided_stride2offset( NX, strideX );
 	const CBLAS_INT oy = stdlib_strided_stride2offset( NY, strideY );
-	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, X, strideX, sigmay, ox, Y, strideY, oy, results );
+	API_SUFFIX(stdlib_strided_dztest2_ndarray)( NX, NY, alternative, alpha, diff, sigmax, X, strideX, ox, sigmay, Y, strideY, oy, results );
 }
 
 /**

From eb601640079ce61b79af1890059a05c46d535405 Mon Sep 17 00:00:00 2001
From: gururaj1512 <gururajgurram1512@gmail.com>
Date: Fri, 11 Jul 2025 10:22:20 +0000
Subject: [PATCH 7/7] feat: add benchmarks

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: passed
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: missing_dependencies
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 .../strided/dztest2/benchmark/benchmark.js    | 104 ++++++++
 .../dztest2/benchmark/benchmark.native.js     | 109 +++++++++
 .../dztest2/benchmark/benchmark.ndarray.js    | 104 ++++++++
 .../benchmark/benchmark.ndarray.native.js     | 109 +++++++++
 .../strided/dztest2/benchmark/c/Makefile      | 146 ++++++++++++
 .../dztest2/benchmark/c/benchmark.length.c    | 225 ++++++++++++++++++
 6 files changed, 797 insertions(+)
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.native.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.native.js
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/Makefile
 create mode 100644 lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/benchmark.length.c

diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.js
new file mode 100644
index 000000000000..d60bb28b694c
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.js
@@ -0,0 +1,104 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var normal = require( '@stdlib/random/array/normal' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var pkg = require( './../package.json' ).name;
+var dztest2 = require( './../lib/dztest2.js' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var results;
+	var x;
+	var y;
+
+	results = new Results();
+	x = normal( len, 0.0, 1.0, options );
+	y = normal( len, 0.0, 1.0, options );
+
+	return benchmark;
+
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 1.0, y, 1, results );
+			if ( isnan( out.statistic ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( out.statistic ) ) {
+			b.fail( 'should not return NaN' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+':len='+len, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..86384ace550f
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.native.js
@@ -0,0 +1,109 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var normal = require( '@stdlib/random/array/normal' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var dztest2 = tryRequire( resolve( __dirname, './../lib/dztest2.native.js' ) );
+var opts = {
+	'skip': ( dztest2 instanceof Error )
+};
+var options = {
+	'dtype': 'float64'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var results;
+	var x;
+	var y;
+
+	results = new Results();
+	x = normal( len, 0.0, 1.0, options );
+	y = normal( len, 0.0, 1.0, options );
+
+	return benchmark;
+
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 1.0, y, 1, results );
+			if ( isnan( out.statistic ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( out.statistic ) ) {
+			b.fail( 'should not return NaN' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+'::native:len='+len, opts, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.js
new file mode 100644
index 000000000000..3914c077955e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.js
@@ -0,0 +1,104 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var normal = require( '@stdlib/random/array/normal' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var pkg = require( './../package.json' ).name;
+var dztest2 = require( './../lib/ndarray.js' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var results;
+	var x;
+	var y;
+
+	results = new Results();
+	x = normal( len, 0.0, 1.0, options );
+	y = normal( len, 0.0, 1.0, options );
+
+	return benchmark;
+
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 1.0, y, 1, 0, results );
+			if ( isnan( out.statistic ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( out.statistic ) ) {
+			b.fail( 'should not return NaN' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+':len='+len, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.native.js
new file mode 100644
index 000000000000..55f44518ea2e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/benchmark.ndarray.native.js
@@ -0,0 +1,109 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var normal = require( '@stdlib/random/array/normal' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var Results = require( '@stdlib/stats/base/ztest/two-sample/results/float64' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var dztest2 = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
+var opts = {
+	'skip': ( dztest2 instanceof Error )
+};
+var options = {
+	'dtype': 'float64'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var results;
+	var x;
+	var y;
+
+	results = new Results();
+	x = normal( len, 0.0, 1.0, options );
+	y = normal( len, 0.0, 1.0, options );
+
+	return benchmark;
+
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = dztest2( x.length, y.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, 1.0, y, 1, 0, results );
+			if ( isnan( out.statistic ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( out.statistic ) ) {
+			b.fail( 'should not return NaN' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+'::native:ndarray:len='+len, opts, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/Makefile b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/Makefile
new file mode 100644
index 000000000000..cce2c865d7ad
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+	CC := $(C_COMPILER)
+else
+	CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+	-std=c99 \
+	-O3 \
+	-Wall \
+	-pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+	fPIC ?=
+else
+	fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.length.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+	$(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+	$(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+	$(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/benchmark.length.c b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/benchmark.length.c
new file mode 100644
index 000000000000..2aa390754091
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/dztest2/benchmark/c/benchmark.length.c
@@ -0,0 +1,225 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/strided/dztest2.h"
+#include "stdlib/stats/base/ztest/two-sample/results/float64.h"
+#include "stdlib/stats/base/ztest/alternatives.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <time.h>
+#include <sys/time.h>
+
+#define NAME "dztest2"
+#define ITERATIONS 1000000
+#define REPEATS 3
+#define MIN 1
+#define MAX 6
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+	printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total     total number of tests
+* @param passing   total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+	printf( "#\n" );
+	printf( "1..%d\n", total ); // TAP plan
+	printf( "# total %d\n", total );
+	printf( "# pass  %d\n", passing );
+	printf( "#\n" );
+	printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param iterations  number of iterations
+* @param elapsed     elapsed time in seconds
+*/
+static void print_results( int iterations, double elapsed ) {
+	double rate = (double)iterations / elapsed;
+	printf( "  ---\n" );
+	printf( "  iterations: %d\n", iterations );
+	printf( "  elapsed: %0.9f\n", elapsed );
+	printf( "  rate: %0.9f\n", rate );
+	printf( "  ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+	struct timeval now;
+	gettimeofday( &now, NULL );
+	return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [min,max).
+*
+* @param min    minimum value (inclusive)
+* @param max    maximum value (exclusive)
+* @return       random number
+*/
+static double random_uniform( const double min, const double max ) {
+	double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+	return min + ( v*(max-min) );
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations   number of iterations
+* @param len          array length
+* @return             elapsed time in seconds
+*/
+static double benchmark1( int iterations, int len ) {
+	double elapsed;
+	double x[ len ];
+	double y[ len ];
+	double t;
+	int i;
+
+	struct stdlib_stats_ztest_two_sample_float64_results results = {
+		.rejected = false,
+		.alpha = 0.0,
+		.alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+		.pValue = 0.0,
+		.statistic = 0.0,
+		.ci = { 0.0, 0.0 },
+		.nullValue = 0.0,
+		.xmean = 0.0,
+		.ymean = 0.0
+	};
+
+	for ( i = 0; i < len; i++ ) {
+		x[ i ] = random_uniform( -5.0, 5.0 );
+		y[ i ] = random_uniform( -5.0, 5.0 );
+	}
+	t = tic();
+	for ( i = 0; i < iterations; i++ ) {
+		// cppcheck-suppress uninitvar
+		stdlib_strided_dztest2( len, len, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, x, 1, 1.0, y, 1, &results );
+		if ( results.statistic != results.statistic ) {
+			printf( "should not return NaN\n" );
+			break;
+		}
+	}
+	elapsed = tic() - t;
+	if ( results.statistic != results.statistic ) {
+		printf( "should not return NaN\n" );
+	}
+	return elapsed;
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations   number of iterations
+* @param len          array length
+* @return             elapsed time in seconds
+*/
+static double benchmark2( int iterations, int len ) {
+	double elapsed;
+	double x[ len ];
+	double y[ len ];
+	double t;
+	int i;
+
+	struct stdlib_stats_ztest_two_sample_float64_results results = {
+		.rejected = false,
+		.alpha = 0.0,
+		.alternative = STDLIB_STATS_ZTEST_TWO_SIDED,
+		.pValue = 0.0,
+		.statistic = 0.0,
+		.ci = { 0.0, 0.0 },
+		.nullValue = 0.0,
+		.xmean = 0.0,
+		.ymean = 0.0
+	};
+
+	for ( i = 0; i < len; i++ ) {
+		x[ i ] = random_uniform( -5.0, 5.0 );
+		y[ i ] = random_uniform( -5.0, 5.0 );
+	}
+	t = tic();
+	for ( i = 0; i < iterations; i++ ) {
+		// cppcheck-suppress uninitvar
+		stdlib_strided_dztest2_ndarray( len, len, STDLIB_STATS_ZTEST_TWO_SIDED, 0.05, 0.0, 1.0, x, 1, 0, 1.0, y, 1, 0, &results );
+		if ( results.statistic != results.statistic ) {
+			printf( "should not return NaN\n" );
+			break;
+		}
+	}
+	elapsed = tic() - t;
+	if ( results.statistic != results.statistic ) {
+		printf( "should not return NaN\n" );
+	}
+	return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+	double elapsed;
+	int count;
+	int iter;
+	int len;
+	int i;
+	int j;
+
+	// Use the current time to seed the random number generator:
+	srand( time( NULL ) );
+
+	print_version();
+	count = 0;
+	for ( i = MIN; i <= MAX; i++ ) {
+		len = pow( 10, i );
+		iter = ITERATIONS / pow( 10, i-1 );
+		for ( j = 0; j < REPEATS; j++ ) {
+			count += 1;
+			printf( "# c::%s:len=%d\n", NAME, len );
+			elapsed = benchmark1( iter, len );
+			print_results( iter, elapsed );
+			printf( "ok %d benchmark finished\n", count );
+		}
+	}
+	for ( i = MIN; i <= MAX; i++ ) {
+		len = pow( 10, i );
+		iter = ITERATIONS / pow( 10, i-1 );
+		for ( j = 0; j < REPEATS; j++ ) {
+			count += 1;
+			printf( "# c::%s:ndarray:len=%d\n", NAME, len );
+			elapsed = benchmark2( iter, len );
+			print_results( iter, elapsed );
+			printf( "ok %d benchmark finished\n", count );
+		}
+	}
+	print_summary( count, count );
+}