diff options
Diffstat (limited to 'newlib/libc/string/strcasecmp.c')
| -rw-r--r-- | newlib/libc/string/strcasecmp.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/newlib/libc/string/strcasecmp.c b/newlib/libc/string/strcasecmp.c index f96f7f5c9..73cf8661e 100644 --- a/newlib/libc/string/strcasecmp.c +++ b/newlib/libc/string/strcasecmp.c @@ -22,7 +22,7 @@ DESCRIPTION RETURNS If <<*<[a]>>> sorts lexicographically after <<*<[b]>>> (after - both are converted to uppercase), <<strcasecmp>> returns a + both are converted to lowercase), <<strcasecmp>> returns a number greater than zero. If the two strings match, <<strcasecmp>> returns zero. If <<*<[a]>>> sorts lexicographically before <<*<[b]>>>, <<strcasecmp>> returns a @@ -35,7 +35,7 @@ PORTABILITY tolower() from elsewhere in this library. QUICKREF - strcasecmp + strcasecmp */ #include <string.h> @@ -46,11 +46,15 @@ _DEFUN (strcasecmp, (s1, s2), _CONST char *s1 _AND _CONST char *s2) { - while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) + _CONST unsigned char *ucs1 = (_CONST unsigned char *) s1; + _CONST unsigned char *ucs2 = (_CONST unsigned char *) s2; + int d = 0; + for ( ; ; ) { - s1++; - s2++; + _CONST int c1 = tolower(*ucs1++); + _CONST int c2 = tolower(*ucs2++); + if (((d = c1 - c2) != 0) || (c2 == '\0')) + break; } - - return tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2); + return d; } |