git: 9front

ref: 34a0e99dc0d0d0c665a8366882ad4e8d06a84e11
dir: /sys/src/libc/port/strchr.c/

#include <u.h>
#include <libc.h>

char*
strchr(char *s, int c)
{
	char r;

	if(c == 0)
		while(*s++)
			;
	else
		while((r = *s++) != c)
			if(r == 0)
				return 0;
	return s-1;
}