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/*
* strcasecmp.c
*/
#include <string.h>
#include <ctype.h>
int strcasecmp(const char *s1, const char *s2)
{
const unsigned char *c1 = (const unsigned char *)s1;
const unsigned char *c2 = (const unsigned char *)s2;
unsigned char ch;
int d = 0;
while (1) {
/* 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;
}
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