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/__support/macros/config.h"
  12 #include "src/string/memory_utils/inline_memmem.h"
  13
  14 namespace LIBC_NAMESPACE_DECL {
  15
  16 LLVM_LIBC_FUNCTION(void *, memmem,
  17                    (const void *haystack, size_t haystack_len,
  18                     const void *needle, size_t needle_len)) {
  19   constexpr auto COMP = [](unsigned char l, unsigned char r) -> int {
  20     return l - r;
  21   };
  22   return inline_memmem(haystack, haystack_len, needle, needle_len, COMP);
  23 }
  24
  25 } // namespace LIBC_NAMESPACE_DECL