doc: Document assert_memory_not_equal().
diff --git a/include/cmocka.h b/include/cmocka.h
index 18f26f3..1549328 100755
--- a/include/cmocka.h
+++ b/include/cmocka.h
@@ -507,10 +507,27 @@
__LINE__)
#endif
-/* Assert that the two given areas of memory are not equal, otherwise fail. */
+#ifdef DOXYGEN
+/**
+ * @brief Assert that the two given areas of memory are not equal.
+ *
+ * The function prints an error message to standard error and terminates the
+ * test by calling fail() if the memory is equal.
+ *
+ * @param[in] a The first memory area to compare
+ * (interpreted as unsigned char).
+ *
+ * @param[in] b The second memory area to compare
+ * (interpreted as unsigned char).
+ *
+ * @param[in] size The first n bytes of the memory areas to compare.
+ */
+void assert_memory_not_equal(const void *a, const void *b, size_t size);
+#else
#define assert_memory_not_equal(a, b, size) \
- _assert_memory_not_equal((const char*)(a), (const char*)(b), size, \
+ _assert_memory_not_equal((const void*)(a), (const void*)(b), size, \
__FILE__, __LINE__)
+#endif
/* Assert that the specified value is >= minimum and <= maximum. */
#define assert_in_range(value, minimum, maximum) \
