Changeset 2353

Timestamp:

Jul 14, 2011 4:05:00 AM (23 months ago)

Author:

quozl

Message:

memcmp version from multicast-nand moved into library, Mitch identified
it as better than the one that was there.

File:

• clients/lib/mem.c (modified) (1 diff)

clients/lib/mem.c

@@ -18 +18 @@
 
 int
-memcmp(void *s1, void *s2, int len)
+memcmp(const void *s1, const void *s2, size_t n)
 {
-        for (; len--; ++s1, ++s2)
-                if (*(unsigned char *)s1 != *(unsigned char *)s2)
-                        return *(unsigned char *)s1 - *(unsigned char *)s2;
+        int diff;
+        while (n--) {
+                diff = *(unsigned char *)s1++ - *(unsigned char *)s2++;
+                if (diff)
+                        return (diff < 0) ? -1 : 1;
+        }
         return 0;
 }