diff options
Diffstat (limited to 'libc/string/strncasecmp.c')
| -rw-r--r-- | libc/string/strncasecmp.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/libc/string/strncasecmp.c b/libc/string/strncasecmp.c index ba73e6f09..a1bb15574 100644 --- a/libc/string/strncasecmp.c +++ b/libc/string/strncasecmp.c @@ -6,17 +6,18 @@ #include <string.h> #include <ctype.h> -int strncasecmp( const char *s, const char *d, size_t l) +int strncasecmp (const char *a, const char *b, size_t len) { - while (l > 0) { - if (*s != *d) { - if (tolower(*s) != tolower(*d)) - return *s - *d; - } else if (*s == '\0') - return 0; - s++; - d++; - l--; - } + register int n; + + if (len < 1) return 0; + while (*a == *b || (n = tolower (*a) - tolower (*b)) == 0) + { + if (*a == '\0' || --len < 1) + return 0; + a++, b++; + } + return n; } + |