| 1 | //===-- Implementation of ctime function ----------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/time/ctime.h" |
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| 10 | #include "src/__support/CPP/limits.h" |
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| 11 | #include "src/__support/common.h" |
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| 12 | #include "src/__support/macros/config.h" |
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| 13 | #include "src/time/time_constants.h" |
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| 14 | #include "src/time/time_utils.h" |
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| 15 | |
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| 16 | namespace LIBC_NAMESPACE_DECL { |
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| 17 | |
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| 18 | LLVM_LIBC_FUNCTION(char *, ctime, (const time_t *t_ptr)) { |
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| 19 | if (t_ptr == nullptr || *t_ptr > cpp::numeric_limits<int32_t>::max()) { |
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| 20 | return nullptr; |
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| 21 | } |
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| 22 | static char buffer[time_constants::ASCTIME_BUFFER_SIZE]; |
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| 23 | return time_utils::asctime(time_utils::localtime(t_ptr), buffer, |
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| 24 | time_constants::ASCTIME_MAX_BYTES); |
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| 25 | } |
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| 26 | |
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| 27 | } // namespace LIBC_NAMESPACE_DECL |
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| 28 | |
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