ViennaCL - The Vienna Computing Library  1.7.0
Free open-source GPU-accelerated linear algebra and solver library.
fft_operations.hpp File Reference

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

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.