30 lines · cpp
1//===-- Implementation of stpcpy ------------------------------------------===//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/stpcpy.h"10#include "src/__support/macros/config.h"11#include "src/string/memory_utils/inline_memcpy.h"12#include "src/string/string_utils.h"13 14#include "src/__support/common.h"15 16namespace LIBC_NAMESPACE_DECL {17 18LLVM_LIBC_FUNCTION(char *, stpcpy,19 (char *__restrict dest, const char *__restrict src)) {20 size_t size = internal::string_length(src) + 1;21 inline_memcpy(dest, src, size);22 char *result = dest + size;23 24 if (result != nullptr)25 return result - 1;26 return nullptr;27}28 29} // namespace LIBC_NAMESPACE_DECL30