std library function almost done, tested with libft-unit-tests

1 files changed, 19 insertions, 0 deletions

diff --git a/ft_memcmp.c b/ft_memcmp.c
new file mode 100644
index 0000000..76cd47d
--- /dev/null
+++ b/ft_memcmp.c
@@ -0,0 +1,19 @@
+#include <string.h>
+
+int ft_memcmp(const void *s1, const void *s2, size_t n)
+{
+    size_t          i;
+    unsigned char   *uc_s1;
+    unsigned char   *uc_s2;
+
+    uc_s1 = (unsigned char*)s1;
+    uc_s2 = (unsigned char*)s2;
+    i = 0;
+    if (n == 0)
+        return (0);
+    while (i < n && uc_s1[i] == uc_s2[i])
+        i++;
+    if (i == n)
+        i--;
+    return (uc_s1[i] - uc_s2[i]);
+}