llvm-project
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1//===-- Implementation of strstr ------------------------------------------===//
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/strstr.h"
10
11#include "src/__support/common.h"
12#include "src/string/memory_utils/inline_strstr.h"
13
14namespace LIBC_NAMESPACE {
15
16// TODO: This is a simple brute force implementation. This can be
17// improved upon using well known string matching algorithms.
18LLVM_LIBC_FUNCTION(char *, strstr, (const char *haystack, const char *needle)) {
19auto comp = [](char l, char r) -> int { return l - r; };
20return inline_strstr(haystack, needle, comp);
21}
22
23} // namespace LIBC_NAMESPACE
24