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add dft/sawtooth, triangle, square, phase_spectrum, ...

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bolero-MURAKAMI 2012-07-08 21:05:24 +09:00
parent 3b6ba46f17
commit e4a4d17207
33 changed files with 2216 additions and 79 deletions
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87
sprout/numeric/dft/fixed/square.hpp Normal file
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#ifndef SPROUT_NUMERIC_DFT_FIXED_SQUARE_HPP
#define SPROUT_NUMERIC_DFT_FIXED_SQUARE_HPP
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/container/indexes.hpp>
#include <sprout/algorithm/fixed/result_of.hpp>
#include <sprout/numeric/dft/fixed/sawtooth.hpp>
namespace sprout {
namespace fixed {
namespace detail {
template<typename T>
inline SPROUT_CONSTEXPR T
square_value(T const& t, T const& d) {
return sprout::fixed::detail::sawtooth_value(t) - sprout::fixed::detail::sawtooth_value(t - d);
}
template<typename Container, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type
square_impl(
Container const& cont,
typename sprout::container_traits<Container>::value_type const& frequency,
typename sprout::container_traits<Container>::value_type const& amplitude,
typename sprout::container_traits<Container>::value_type const& phase,
typename sprout::container_traits<Container>::value_type const& duty,
sprout::index_tuple<Indexes...>,
typename sprout::container_traits<Container>::difference_type offset,
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::square_value(frequency * value_type(Indexes) + phase, duty)
: *sprout::next(sprout::internal_begin(cont), Indexes)
)...
);
}
template<typename Container>
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type
square(
Container const& cont,
typename sprout::container_traits<Container>::value_type const& frequency,
typename sprout::container_traits<Container>::value_type const& amplitude,
typename sprout::container_traits<Container>::value_type const& phase,
typename sprout::container_traits<Container>::value_type const& duty
)
{
typedef typename sprout::container_traits<Container>::value_type value_type;
return sprout::fixed::detail::square_impl(
cont,
frequency,
amplitude,
phase,
duty,
sprout::container_indexes<Container>::make(),
sprout::internal_begin_offset(cont),
sprout::size(cont)
);
}
} // namespace detail
//
// square
//
template<typename Container>
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type
square(
Container const& cont,
typename sprout::container_traits<Container>::value_type const& frequency = 1,
typename sprout::container_traits<Container>::value_type const& amplitude = 1,
typename sprout::container_traits<Container>::value_type const& phase = 0,
typename sprout::container_traits<Container>::value_type const& duty = 0.5
)
{
return sprout::fixed::detail::square(cont, frequency, amplitude, phase, duty);
}
} // namespace fixed
using sprout::fixed::square;
} // namespace sprout
#endif // #ifndef SPROUT_NUMERIC_DFT_FIXED_SQUARE_HPP