[clang] [clang-tools-extra] [libc] [libc][c11] implement ctime (PR #107285)

[Зишан Мирза via cfe-commits]

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@@ -0,0 +1,26 @@
+//===-- Implementation of ctime function ----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "ctime.h"
+#include "../__support/common.h"
+#include "../__support/macros/config.h"
+#include "time_utils.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+using LIBC_NAMESPACE::time_utils::TimeConstants;
+
+LLVM_LIBC_FUNCTION(char *, ctime, (const time_t *t_ptr)) {
+  if (t_ptr > 2147483647) {
+    return llvm::createStringError(llvm::errc::invalid_argument, "ERROR");
+  }
+  static char buffer[TimeConstants::ASCTIME_BUFFER_SIZE];
+  return time_utils::asctime(localtime(t_ptr), buffer, TimeConstants::ASCTIME_MAX_BYTES);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
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zimirza wrote:

I have added newline at the end of all new files in this pull request.

https://github.com/llvm/llvm-project/pull/107285