llvm-project
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1//===-- Implementation of strnlen------------------------------------------===//
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/strnlen.h"
10#include "src/string/string_utils.h"
11
12#include "src/__support/common.h"
13#include <stddef.h>
14
15namespace LIBC_NAMESPACE {
16
17LLVM_LIBC_FUNCTION(size_t, strnlen, (const char *src, size_t n)) {
18const void *temp = internal::find_first_character(
19reinterpret_cast<const unsigned char *>(src), '\0', n);
20return temp ? reinterpret_cast<const char *>(temp) - src : n;
21}
22
23} // namespace LIBC_NAMESPACE
24