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maths: add identity function

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This commit is contained in:
Danny Robson 2015-10-19 17:06:52 +11:00
parent 60f16cdc4a
commit 36b4043faf
1 changed files with 9 additions and 0 deletions
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9
maths.hpp
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@ -139,6 +139,15 @@ constexpr float sign (float);
constexpr double sign (double); constexpr double sign (double);
//-----------------------------------------------------------------------------
template <typename T>
const T&
identity (const T& t)
{
return t;
}
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
// Comparisons // Comparisons
template <typename T> template <typename T>