libc/src/string/memchr.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/string/memchr.h"
  10 #include "src/__support/macros/config.h"
  11 #include "src/string/string_utils.h"
  12
  13 #include "src/__support/common.h"
  14 #include <stddef.h>
  15
  16 namespace LIBC_NAMESPACE_DECL {
  17
  18 // TODO: Look at performance benefits of comparing words.
  19 LLVM_LIBC_FUNCTION(void *, memchr, (const void *src, int c, size_t n)) {
  20   return internal::find_first_character(
  21       reinterpret_cast<const unsigned char *>(src),
  22       static_cast<unsigned char>(c), n);
  23 }
  24
  25 } // namespace LIBC_NAMESPACE_DECL