scc

commit 92efbe7e846d7326ffbe076a99fb682172039261
parent 4b31904c19ede644b5657f46b5823faf9e2bcf09
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri, 17 Feb 2017 08:40:40 +0100

[libc] Add memcmp()

Diffstat:
M
libc/src/Makefile
 | 
2
+-
A
libc/src/memcmp.c
 | 
13
+++++++++++++

2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/libc/src/Makefile b/libc/src/Makefile
@@ -3,7 +3,7 @@
 
 LIBCOBJ = assert.o strcpy.o strcmp.o strlen.o strchr.o \
           strrchr.o strcat.o strncpy.o strncat.o \
-          memset.o memcpy.o memmove.o
+          memset.o memcpy.o memmove.o memcmp.o
 
 all: libc.a
 
diff --git a/libc/src/memcmp.c b/libc/src/memcmp.c
@@ -0,0 +1,13 @@
+/* See LICENSE file for copyright and license details. */
+
+#include <string.h>
+
+int
+memcmp(const void *s1, const void *s2, size_t n)
+{
+	char *s = (char *) s1, *t = (char *) s2;
+
+	while (n > 0 && *s++ != *t++)
+		--n;
+	return n != 0;
+}