Squashed 'libs/Catch2/' content from commit 182c910b

git-subtree-dir: libs/Catch2
git-subtree-split: 182c910b4b63ff587a3440e08f84f70497e49a81

include/internal/catch_timer.h

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+/*
+ *  Created by Phil on 05/08/2013.
+ *  Copyright 2013 Two Blue Cubes Ltd. All rights reserved.
+ *
+ *  Distributed under the Boost Software License, Version 1.0. (See accompanying
+ *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+#ifndef TWOBLUECUBES_CATCH_TIMER_H_INCLUDED
+#define TWOBLUECUBES_CATCH_TIMER_H_INCLUDED
+
+#include <cstdint>
+
+namespace Catch {
+
+    auto getCurrentNanosecondsSinceEpoch() -> uint64_t;
+    auto getEstimatedClockResolution() -> uint64_t;
+
+    class Timer {
+        uint64_t m_nanoseconds = 0;
+    public:
+        void start();
+        auto getElapsedNanoseconds() const -> uint64_t;
+        auto getElapsedMicroseconds() const -> uint64_t;
+        auto getElapsedMilliseconds() const -> unsigned int;
+        auto getElapsedSeconds() const -> double;
+    };
+
+} // namespace Catch
+
+#endif // TWOBLUECUBES_CATCH_TIMER_H_INCLUDED