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-rw-r--r--include/string.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h
index 53aaca6..d1eedd0 100644
--- a/include/string.h
+++ b/include/string.h
@@ -727,6 +727,23 @@ void* memdup(const void*, size_t)
int memcmp(const void*, const void*, size_t)
__GCC_ONLY(__attribute__((warn_unused_result, pure)));
+#if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
+/**
+ * Compare two memory segments alphabetically in a case insensitive manner.
+ *
+ * This is a slibc extension added because it was useful
+ * in implementing slibc itself.
+ *
+ * @param a A negative value is returned if this is the lesser.
+ * @param b A positive value is returned if this is the lesser.
+ * @param size The size of the segments.
+ * @return Zero is returned if `a` and `b` are equal, otherwise,
+ * see the specifications for `a` and `b`.
+ */
+int memcasecmp(const void*, const void*, size_t)
+ __GCC_ONLY(__attribute__((warn_unused_result, pure)));
+#endif
+
/**
* Compare two strings alphabetically in a case sensitive manner.
*