28 lines · cpp
1//===-- Implementation of ctime function ----------------------------------===//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/time/ctime.h"10#include "src/__support/CPP/limits.h"11#include "src/__support/common.h"12#include "src/__support/macros/config.h"13#include "src/time/time_constants.h"14#include "src/time/time_utils.h"15 16namespace LIBC_NAMESPACE_DECL {17 18LLVM_LIBC_FUNCTION(char *, ctime, (const time_t *t_ptr)) {19 if (t_ptr == nullptr || *t_ptr > cpp::numeric_limits<int32_t>::max()) {20 return nullptr;21 }22 static char buffer[time_constants::ASCTIME_BUFFER_SIZE];23 return time_utils::asctime(time_utils::localtime(t_ptr), buffer,24 time_constants::ASCTIME_MAX_BYTES);25}26 27} // namespace LIBC_NAMESPACE_DECL28