git: 9front

ref: d41b70b7628e913d8af6676c2a5be6ee2d68adf9
dir: /sys/src/ape/lib/ap/gen/memchr.c/

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#include	<string.h>

void*
memchr(const void *ap, int c, size_t n)
{
	unsigned char *sp;

	sp = (unsigned char*)ap;
	c &= 0xFF;
	while(n > 0) {
		if(*sp++ == c)
			return sp-1;
		n--;
	}
	return 0;
}