ref: 2a03ed80e4fc52c327e47e1749c97b4e2c1aa1d8
dir: /sys/src/libc/port/strpbrk.c/
#include <u.h> #include <libc.h> #define N 256 char* strpbrk(char *cs, char *cb) { char map[N]; uchar *s=(uchar*)cs, *b=(uchar*)cb; memset(map, 0, N); for(;;) { map[*b] = 1; if(*b++ == 0) break; } while(map[*s++] == 0) ; if(*--s) return (char*)s; return 0; }