1// Copyright 2016 The Fuchsia Authors 2// Copyright 2001, Manuel J. Petit. 3// Copyright (c) 2008 Travis Geiselbrecht 4// 5// Use of this source code is governed by a MIT-style 6// license that can be found in the LICENSE file or at 7// https://opensource.org/licenses/MIT 8 9#include <string.h> 10#include <sys/types.h> 11 12void * 13memchr(void const *buf, int c, size_t len) 14{ 15 size_t i; 16 unsigned char const *b= buf; 17 unsigned char x= (c&0xff); 18 19 for (i= 0; i< len; i++) { 20 if (b[i]== x) { 21 return (void *)(b+i); 22 } 23 } 24 25 return NULL; 26} 27 28