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/* strncs.c
Compare two strings case insensitively up to a point. */
#include "uucp.h"
#include <ctype.h>
int
strncasecmp (z1, z2, c)
const char *z1;
const char *z2;
size_t c;
{
char b1, b2;
if (c == 0)
return 0;
while ((b1 = *z1++) != '\0')
{
b2 = *z2++;
if (b2 == '\0')
return 1;
if (b1 != b2)
{
if (isupper (BUCHAR (b1)))
b1 = tolower (BUCHAR (b1));
if (isupper (BUCHAR (b2)))
b2 = tolower (BUCHAR (b2));
if (b1 != b2)
return b1 - b2;
}
--c;
if (c == 0)
return 0;
}
if (*z2 == '\0')
return 0;
else
return -1;
}
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