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* CTest: add safe conversion from cmDuration to integer typesWouter Klouwen2018-01-231-0/+16
| | | | | | | | | | | | | A problem area by recent refactoring of time to std::chrono has been the unsafe conversion from duration<double> to std::chrono::seconds, which is of an unspecified integer type. This commit adds a template function that for a given type provides a safe conversion, effectively clamping a duration<double> into what fits safely in that type. A specialisation for int and unsigned int are provided. It changes the protential problem areas to use this safe function.
* CTest: introduce cmDurationWouter Klouwen2018-01-231-0/+8
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.