libc/src/string/memmem.cpp

   1 //===-- Implementation of memmem ------------------------------------------===//
   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/memmem.h"
  10 #include "src/__support/common.h"
  11 #include "src/string/memory_utils/memmem_implementations.h"
  12
  13 namespace __llvm_libc {
  14
  15 LLVM_LIBC_FUNCTION(void *, memmem,
  16                    (const void *haystack, size_t haystack_len,
  17                     const void *needle, size_t needle_len)) {
  18   constexpr auto comp = [](unsigned char l, unsigned char r) -> int {
  19     return l - r;
  20   };
  21   return memmem_implementation(haystack, haystack_len, needle, needle_len,
  22                                comp);
  23 }
  24
  25 } // namespace __llvm_libc