25 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/string/strnlen.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 16namespace LIBC_NAMESPACE_DECL {17 18LLVM_LIBC_FUNCTION(size_t, strnlen, (const char *src, size_t n)) {19 const void *temp = internal::find_first_character(20 reinterpret_cast<const unsigned char *>(src), '\0', n);21 return temp ? reinterpret_cast<const char *>(temp) - src : n;22}23 24} // namespace LIBC_NAMESPACE_DECL25