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25 lines
845 B
25 lines
845 B
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include <chrono>
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#include <ratio>
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using cmDuration = std::chrono::duration<double, std::ratio<1>>;
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/*
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* This function will return number of seconds in the requested type T.
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*
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* A duration_cast from duration<double> to duration<T> will not yield what
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* one might expect if the double representation does not fit into type T.
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* This function aims to safely convert, by clamping the double value between
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* the permissible valid values for T.
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*/
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template <typename T>
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T cmDurationTo(const cmDuration& duration);
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#ifndef CMDURATION_CPP
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extern template int cmDurationTo<int>(const cmDuration&);
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extern template unsigned int cmDurationTo<unsigned int>(const cmDuration&);
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#endif
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