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- /*
- * strncasecmp.c
- */
-
- #include <string.h>
- #include <ctype.h>
-
- int strncasecmp(const char *s1, const char *s2, size_t n)
- {
- const unsigned char *c1 = s1, *c2 = s2;
- unsigned char ch;
- int d = 0;
-
- while ( n-- ) {
- /* toupper() expects an unsigned char (implicitly cast to int)
- as input, and returns an int, which is exactly what we want. */
- d = toupper(ch = *c1++) - toupper(*c2++);
- if ( d || !ch )
- break;
- }
-
- return d;
- }
-