xref: /reactos/sdk/lib/crt/string/strnicmp.c (revision c2c66aff) 
1 #include <precomp.h>
2 
3 /*
4  * @implemented
5  */
_strnicmp(const char * s1,const char * s2,size_t n)6 int CDECL _strnicmp(const char *s1, const char *s2, size_t n)
7 {
8 
9   if (n == 0)
10     return 0;
11   do {
12     if (toupper(*s1) != toupper(*s2++))
13       return toupper(*(unsigned const char *)s1) - toupper(*(unsigned const char *)--s2);
14     if (*s1++ == 0)
15       break;
16   } while (--n != 0);
17   return 0;
18 }
19