* missing.h, missing/memcmp.c, missing/memmove.c:

  ANSI compatible interface.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@9470 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 12 insertions, 14 deletions

diff --git a/missing/memcmp.c b/missing/memcmp.c
index 9edc9c13b..5b3ad3817 100644
--- a/missing/memcmp.c
+++ b/missing/memcmp.c
@@ -1,16 +1,15 @@
 /* public domain rewrite of memcmp(3) */
 
+#include <stddef.h>
+
 int
-memcmp(s1,s2,len)
-    char *s1;
-    char *s2;
-    register int len;
+memcmp(const void *s1, const void *s2, size_t len)
 {
     register unsigned char *a = (unsigned char*)s1;
     register unsigned char *b = (unsigned char*)s2;
     register int tmp;
 
-    while (len--) {
+    for (; len; --len) {
 	if (tmp = *a++ - *b++)
 	    return tmp;
     }
diff --git a/missing/memmove.c b/missing/memmove.c
index c9d67d8b4..19c5f1884 100644
--- a/missing/memmove.c
+++ b/missing/memmove.c
@@ -1,22 +1,21 @@
 /* public domain rewrite of memcmp(3) */
 
+#include <stddef.h>
+
 void *
-memmove (d, s, n)
-    void *d, *s;
-    int n;
+memmove(void *d, const void *s, size_t n)
 {
-    char *dst = d;
-    char *src = s;
-    void *ret = dst;
+    char *dst = (char *)d;
+    const char *src = (const char *)s;
 
     if (src < dst) {
 	src += n;
 	dst += n;
-	while (n--)
+	for (; n; --n)
 	    *--dst = *--src;
     }
     else if (dst < src)
-	while (n--)
+	for (; n; --n)
 	    *dst++ = *src++;
-    return ret;
+    return d;
 }