git: 9front

ref: 0d66f4b8d5a39ba9eb7fe86fd55df07416de87b3
dir: /sys/src/ape/lib/ap/gen/strpbrk.c/

View raw version 
#include <string.h>
#define	N	256

char*
strpbrk(const char *s, const char *b)
{
	char map[N];

	memset(map, 0, N);
	for(;;) {
		map[*b] = 1;
		if(*b++ == 0)
			break;
	}
	while(map[*s++] == 0)
		;
	if(*--s)
		return (char*)s;
	return 0;
}