fft_operations.hpp File Reference

Implementations of Fast Furier Transformation using OpenCL. More...

#include "viennacl/forwards.h"
#include "viennacl/ocl/device.hpp"
#include "viennacl/ocl/kernel.hpp"
#include "viennacl/traits/handle.hpp"
#include "viennacl/traits/stride.hpp"
#include "viennacl/linalg/host_based/fft_operations.hpp"
#include "viennacl/linalg/opencl/kernels/fft.hpp"
#include "viennacl/linalg/opencl/kernels/matrix.hpp"
#include <viennacl/vector.hpp>
#include <viennacl/matrix.hpp>
#include <cmath>
#include <stdexcept>

Go to the source code of this file.

Namespaces
	viennacl
	Main namespace in ViennaCL. Holds all the basic types such as vector, matrix, etc. and defines operations upon them.
	viennacl::linalg
	Provides all linear algebra operations which are not covered by operator overloads.
	viennacl::linalg::detail
	Namespace holding implementation details for linear algebra routines. Usually not of interest for a library user.
	viennacl::linalg::detail::fft
	viennacl::linalg::opencl
	Holds all routines providing OpenCL linear algebra operations.

Functions
vcl_size_t	viennacl::linalg::detail::fft::num_bits (vcl_size_t size)
	Get number of bits. More...
vcl_size_t	viennacl::linalg::detail::fft::next_power_2 (vcl_size_t n)
	Find next power of two. More...
template<typename NumericT >
void	viennacl::linalg::opencl::direct (viennacl::ocl::handle< cl_mem > const &in, viennacl::ocl::handle< cl_mem > const &out, vcl_size_t size, vcl_size_t stride, vcl_size_t batch_num, NumericT sign=NumericT(-1), viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::DATA_ORDER data_order=viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::ROW_MAJOR)
	Direct algorithm for computing Fourier transformation. More...
template<typename NumericT >
void	viennacl::linalg::opencl::reorder (viennacl::ocl::handle< cl_mem > const &in, vcl_size_t size, vcl_size_t stride, vcl_size_t bits_datasize, vcl_size_t batch_num, viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::DATA_ORDER data_order=viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::ROW_MAJOR)
template<typename NumericT >
void	viennacl::linalg::opencl::radix2 (viennacl::ocl::handle< cl_mem > const &in, vcl_size_t size, vcl_size_t stride, vcl_size_t batch_num, NumericT sign=NumericT(-1), viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::DATA_ORDER data_order=viennacl::linalg::host_based::detail::fft::FFT_DATA_ORDER::ROW_MAJOR)
	Radix-2 algorithm for computing Fourier transformation. More...
template<typename NumericT , unsigned int AlignmentV>
void	viennacl::linalg::opencl::bluestein (viennacl::vector< NumericT, AlignmentV > &in, viennacl::vector< NumericT, AlignmentV > &out, vcl_size_t)
	Bluestein's algorithm for computing Fourier transformation. More...
template<typename NumericT , unsigned int AlignmentV>
void	viennacl::linalg::opencl::multiply_complex (viennacl::vector< NumericT, AlignmentV > const &input1, viennacl::vector< NumericT, AlignmentV > const &input2, viennacl::vector< NumericT, AlignmentV > &output)
	Mutiply two complex vectors and store result in output. More...
template<typename NumericT , unsigned int AlignmentV>
void	viennacl::linalg::opencl::normalize (viennacl::vector< NumericT, AlignmentV > &input)
	Normalize vector on with his own size. More...
template<typename NumericT , unsigned int AlignmentV>
void	viennacl::linalg::opencl::transpose (viennacl::matrix< NumericT, viennacl::row_major, AlignmentV > &input)
	Inplace_transpose matrix. More...
template<typename NumericT , unsigned int AlignmentV>
void	viennacl::linalg::opencl::transpose (viennacl::matrix< NumericT, viennacl::row_major, AlignmentV > const &input, viennacl::matrix< NumericT, viennacl::row_major, AlignmentV > &output)
	Transpose matrix. More...
template<typename NumericT >
void	viennacl::linalg::opencl::real_to_complex (viennacl::vector_base< NumericT > const &in, viennacl::vector_base< NumericT > &out, vcl_size_t size)
	Create complex vector from real vector (even elements(2*k) = real part, odd elements(2*k+1) = imaginary part) More...
template<typename NumericT >
void	viennacl::linalg::opencl::complex_to_real (viennacl::vector_base< NumericT > const &in, viennacl::vector_base< NumericT > &out, vcl_size_t size)
	Create real vector from complex vector (even elements(2*k) = real part, odd elements(2*k+1) = imaginary part) More...
template<typename NumericT >
void	viennacl::linalg::opencl::reverse (viennacl::vector_base< NumericT > &in)
	Reverse vector to oposite order and save it in input vector. More...

Variables
const vcl_size_t	viennacl::linalg::detail::fft::MAX_LOCAL_POINTS_NUM = 512

Detailed Description

Implementations of Fast Furier Transformation using OpenCL.

Definition in file fft_operations.hpp.