29 lines · cpp
1//===-- Implementation of memchr ------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/string/memchr.h"10#include "src/__support/macros/config.h"11#include "src/__support/macros/null_check.h"12#include "src/string/string_utils.h"13 14#include "src/__support/common.h"15#include <stddef.h>16 17namespace LIBC_NAMESPACE_DECL {18 19// TODO: Look at performance benefits of comparing words.20LLVM_LIBC_FUNCTION(void *, memchr, (const void *src, int c, size_t n)) {21 if (n)22 LIBC_CRASH_ON_NULLPTR(src);23 return internal::find_first_character(24 reinterpret_cast<const unsigned char *>(src),25 static_cast<unsigned char>(c), n);26}27 28} // namespace LIBC_NAMESPACE_DECL29