Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/ape/lib/ap/gen/strpbrk.c

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#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;
}

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