fusl/src/string/strncasecmp.c

#include <strings.h>
#include <ctype.h>
#include "libc.h"

int strncasecmp(const char* _l, const char* _r, size_t n) {
  const unsigned char *l = (void *)_l, *r = (void *)_r;
  if (!n--)
    return 0;
  for (; *l && *r && n && (*l == *r || tolower(*l) == tolower(*r));
       l++, r++, n--)
    ;
  return tolower(*l) - tolower(*r);
}

int __strncasecmp_l(const char* l, const char* r, size_t n, locale_t loc) {
  return strncasecmp(l, r, n);
}

weak_alias(__strncasecmp_l, strncasecmp_l);