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maths: add sinc functions

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Danny Robson 2015-02-04 15:44:31 +11:00
parent 2fcc16646c
commit 3e9f5efbe0
1 changed files with 12 additions and 7 deletions
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19
maths.hpp
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@ -193,16 +193,21 @@ to_radians [[gnu::pure]] (T degrees)
}
//-----------------------------------------------------------------------------
constexpr float
to_radians [[gnu::pure]] (float degrees) {
return degrees / 180 * static_cast<float> (PI_f);
//! Normalised sinc function
template <typename T>
constexpr T
sincn [[gnu::pure]] (T x)
{
return std::sin (constants<T>::PI * x) / (constants<T>::PI * x);
}
constexpr double
to_radians [[gnu::pure]] (double degrees) {
return degrees / 180 * PI_d;
//! Unnormalised sinc function
template <typename T>
constexpr T
sincu [[gnu::pure]] (T x)
{
return std::sin (x) / x;
}