Trig functions in turns

[jatinchowdhury18]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for trigonometric approximations using turns, extending the library’s sine and cosine functions to support sin(2πx)/cos(2πx) approximations. Key changes include:

• Updates to the plotter module to incorporate new reference functions and adjusted parameter ranges/tolerances.
• Addition of benchmark and test cases for the new trigonometric turn approximations.
• Updates to build configuration and documentation to reflect the new feature.

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tools/plotter/plotter.cpp	Added include and function for sincospi; modified range, tolerance, and plotted function.
tools/plotter/CMakeLists.txt	Added compile definition for math defines.
tools/bench/trig_turns_bench.cpp	New benchmarks for various trigonometric approximations.
tools/bench/CMakeLists.txt	Updated benchmark version and added new benchmark target.
test/src/trig_turns_approx_test.cpp	New test cases for different order approximations.
test/src/test_helpers.hpp	Adjusted relative error computation to add an epsilon bias.
test/src/reference/sincospi.hpp	New reference implementation for sincospi functions.
test/CMakeLists.txt	Included the new trigonometric approximation tests.
include/math_approx/src/trig_approx.hpp	Added new namespace and functions for trigonometric turn approximations.
README.md	Updated documentation to list sin(2πx)/cos(2πx) as supported.

Comments suppressed due to low confidence (1)

test/src/test_helpers.hpp:60

• Consider verifying that adding epsilon to the denominator does not under-report relative errors for values near zero, ensuring the metric accurately reflects the approximation quality.

err[i] = (actual[i] - approx[i]) / (actual[i] + std::numeric_limits<float>::epsilon());