diff options
Diffstat (limited to 'StdLib/LibC/String/strncasecmp.c')
| -rw-r--r-- | StdLib/LibC/String/strncasecmp.c | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/StdLib/LibC/String/strncasecmp.c b/StdLib/LibC/String/strncasecmp.c index b3f6d05965..9cc1851ee2 100644 --- a/StdLib/LibC/String/strncasecmp.c +++ b/StdLib/LibC/String/strncasecmp.c @@ -1,4 +1,4 @@ -/** @file
+/** @file
strncasecmp implementation
Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
@@ -11,7 +11,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
* Copyright (c) 1987, 1993
- * The Regents of the University of California. All rights reserved.
+ * The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -37,8 +37,8 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- $NetBSD: strncasecmp.c,v 1.2 2007/06/04 18:19:27 christos Exp $
- strcasecmp.c 8.1 (Berkeley) 6/4/93
+ $NetBSD: strncasecmp.c,v 1.2 2007/06/04 18:19:27 christos Exp $
+ strcasecmp.c 8.1 (Berkeley) 6/4/93
**/
#include <LibConfig.h>
#include <sys/cdefs.h>
@@ -55,25 +55,28 @@ __weak_alias(strncasecmp,_strncasecmp) #else
#include <lib/libkern/libkern.h>
#include <machine/limits.h>
-#endif
+#endif
int
strncasecmp(const char *s1, const char *s2, size_t n)
{
+ int CompareVal;
- _DIAGASSERT(s1 != NULL);
- _DIAGASSERT(s2 != NULL);
-
- if (n != 0) {
- const unsigned char *us1 = (const unsigned char *)s1,
- *us2 = (const unsigned char *)s2;
+ _DIAGASSERT(s1 != NULL);
+ _DIAGASSERT(s2 != NULL);
- do {
- if (tolower(*us1) != tolower(*us2++))
- return (tolower(*us1) - tolower(*--us2));
- if (*us1++ == '\0')
- break;
- } while (--n != 0);
- }
- return (0);
+ if (n != 0) {
+ do {
+ CompareVal = tolower(*s1) - tolower(*s2);
+ if (CompareVal != 0) {
+ return (CompareVal);
+ }
+ ++s1;
+ ++s2;
+ if (*s1 == '\0') {
+ break;
+ }
+ } while (--n != 0);
+ }
+ return (0);
}
|