examples: add batch_example

added initial example where the batch context is created and destroyed.

Author: siv2r

.gitignore

@@ -9,6 +9,7 @@ valgrind_ctime_test
 ecdh_example
 ecdsa_example
 schnorr_example
+batch_example
 *.exe
 *.so
 *.a

Makefile.am

@@ -50,6 +50,7 @@ noinst_HEADERS += src/assumptions.h
 noinst_HEADERS += src/util.h
 noinst_HEADERS += src/scratch.h
 noinst_HEADERS += src/scratch_impl.h
+noinst_HEADERS += src/batch_impl.h
 noinst_HEADERS += src/selftest.h
 noinst_HEADERS += src/testrand.h
 noinst_HEADERS += src/testrand_impl.h
@@ -150,6 +151,15 @@ if BUILD_WINDOWS
 ecdsa_example_LDFLAGS += -lbcrypt
 endif
 TESTS += ecdsa_example
+noinst_PROGRAMS += batch_example
+batch_example_SOURCES = examples/batch.c
+batch_example_CPPFLAGS = -I$(top_srcdir)/include
+batch_example_LDADD = libsecp256k1.la
+batch_example_LDFLAGS = -static
+if BUILD_WINDOWS
+ecdsa_example_LDFLAGS += -lbcrypt
+endif
+TESTS += batch_example
 if ENABLE_MODULE_ECDH
 noinst_PROGRAMS += ecdh_example
 ecdh_example_SOURCES = examples/ecdh.c

examples/batch.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+
+#include <secp256k1.h>
+
+int main(void) {
+    /* batch_context uses secp256k1_context only for the error callback function*/
+    secp256k1_context *ctx = secp256k1_context_create(SECP256K1_CONTEXT_NONE);
+    
+    secp256k1_batch_context *batch_ctx = secp256k1_batch_context_create(ctx, 3);
+    assert(batch_ctx != NULL);
+    secp256k1_batch_context_destroy(ctx, batch_ctx);
+
+    secp256k1_context_destroy(ctx);
+
+    printf("Batch example completed...\n");
+    return 0;
+}