26 lines · cpp
1//===-- Implementation of strlen ------------------------------------------===//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/strlen.h"10#include "src/__support/macros/config.h"11#include "src/__support/macros/null_check.h"12#include "src/string/string_utils.h"13 14#include "src/__support/common.h"15 16namespace LIBC_NAMESPACE_DECL {17 18// TODO: investigate the performance of this function.19// There might be potential for compiler optimization.20LLVM_LIBC_FUNCTION(size_t, strlen, (const char *src)) {21 LIBC_CRASH_ON_NULLPTR(src);22 return internal::string_length(src);23}24 25} // namespace LIBC_NAMESPACE_DECL26