git: 9front

ref: 77cff46569ad5d0a5bcee1f94f40ef4b1a4f5d40
dir: /sys/src/ape/lib/bsd/strcasecmp.c/

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#include <string.h>

typedef unsigned char uchar;


int
strcasecmp(char *s1, char *s2)
{
	int c1, c2;

	while(*s1){
		c1 = *(uchar*)s1++;
		c2 = *(uchar*)s2++;

		if(c1 == c2)
			continue;

		if(c1 >= 'A' && c1 <= 'Z')
			c1 -= 'A' - 'a';

		if(c2 >= 'A' && c2 <= 'Z')
			c2 -= 'A' - 'a';

		if(c1 != c2)
			return c1 - c2;
	}
	return -*s2;
}