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add c++14 constexpr spectrum and wave genarator algorithms

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bolero-MURAKAMI 2014-04-20 15:25:25 +09:00
parent d1fc657c1f
commit cc48f3585a
29 changed files with 506 additions and 77 deletions
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15
sprout/numeric/dft/fixed/triangle.hpp
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@ -15,22 +15,12 @@
#include <sprout/container/indexes.hpp>
#include <sprout/algorithm/fixed/results.hpp>
#include <sprout/pit/pit.hpp>
#include <sprout/math/sin.hpp>
#include <sprout/math/asin.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/detail/container_complate.hpp>
#include <sprout/numeric/dft/detail/triangle.hpp>
namespace sprout {
namespace fixed {
namespace detail {
template<typename T>
inline SPROUT_CONSTEXPR T
triangle_value(T const& t) {
using sprout::sin;
using sprout::asin;
return T(sprout::math::two_div_pi<double>()) * asin(sin(T(sprout::math::two_pi<double>()) * t));
}
template<typename Container, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Container>::type
triangle_impl(
@ -43,11 +33,10 @@ namespace sprout {
typename sprout::container_traits<Container>::size_type size
)
{
typedef typename sprout::container_traits<Container>::value_type value_type;
return sprout::remake<Container>(
cont, size,
(Indexes >= offset && Indexes < offset + size
? amplitude * sprout::fixed::detail::triangle_value(frequency * value_type(Indexes) + phase)
? sprout::detail::triangle_value(frequency, amplitude, phase, Indexes)
: *sprout::next(sprout::internal_begin(cont), Indexes)
)...
);