CTest: introduce cmDuration

This commit introduces cmDuration as a typedef for
std::chrono::duration<double, std::ratio<1>>. It is less verbose and
provides for a point to put future common functionality for durations.

No functional change intended.

1 files changed, 8 insertions, 0 deletions

diff --git a/Source/cmDuration.h b/Source/cmDuration.h
new file mode 100644
index 0000000..5f73585
--- /dev/null
+++ b/Source/cmDuration.h
@@ -0,0 +1,8 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#pragma once
+
+#include <chrono>
+#include <ratio>
+
+typedef std::chrono::duration<double, std::ratio<1>> cmDuration;