ref: a30f99a4e64b55d80e9bd0d4485972a20bfa2a95
dir: /sys/src/ape/lib/ap/gen/strchr.c/
#include <string.h>
char*
strchr(const char *s, int c)
{
char c1;
if(c == 0) {
while(*s++)
;
return s-1;
}
while(c1 = *s++)
if(c1 == c)
return s-1;
return 0;
}