Implement hh_mm_ss from P1466R3. Reviewed as https://reviews.llvm.org/D65365.

llvm-svn: 368299

1 files changed, 36 insertions, 0 deletions

diff --git a/libcxx/test/std/utilities/time/time.hms/time.12/is_am.pass.cpp b/libcxx/test/std/utilities/time/time.hms/time.12/is_am.pass.cpp
new file mode 100644
index 00000000000..f10707b2c5c
--- /dev/null
+++ b/libcxx/test/std/utilities/time/time.hms/time.12/is_am.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
+// <chrono>
+
+// constexpr bool is_am(const hours& h) noexcept;
+//   Returns: 0h <= h && h <= 11h.
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+	using hours = std::chrono::hours;
+	ASSERT_SAME_TYPE(bool, decltype(std::chrono::is_am(std::declval<hours>())));
+	ASSERT_NOEXCEPT(                std::chrono::is_am(std::declval<hours>()));
+
+	static_assert( std::chrono::is_am(hours( 0)), "");
+	static_assert( std::chrono::is_am(hours(11)), "");
+	static_assert(!std::chrono::is_am(hours(12)), "");
+	static_assert(!std::chrono::is_am(hours(23)), "");
+	
+	for (int i = 0; i < 12; ++i)
+		assert( std::chrono::is_am(hours(i)));
+	for (int i = 12; i < 24; ++i)
+		assert(!std::chrono::is_am(hours(i)));
+
+    return 0;
+}