diff options
Diffstat (limited to 'lib/stdlib/strcmp.c')
-rw-r--r-- | lib/stdlib/strcmp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/stdlib/strcmp.c b/lib/stdlib/strcmp.c index 1d26f2bd..bb86e0f2 100644 --- a/lib/stdlib/strcmp.c +++ b/lib/stdlib/strcmp.c @@ -36,6 +36,7 @@ */ #include <sys/cdefs.h> +#include <sys/ctype.h> #include <string.h> /* @@ -49,3 +50,17 @@ strcmp(const char *s1, const char *s2) return 0; return *(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1); } + +int +strcasecmp(const char *s1, const char *s2) +{ + const unsigned char *us1 = (const unsigned char *)s1; + const unsigned char *us2 = (const unsigned char *)s2; + + while (tolower(*us1) == tolower(*us2)) { + if (*us1++ == '\0') + return 0; + us2++; + } + return tolower(*us1) - tolower(*us2); +} |