signal.h File Reference

(2014-04-30 15:38:09 -0400, (build fd32605))

#include "defines.h"
#include "dims.h"
#include "constants.h"

Go to the source code of this file.

Namespaces
	af

Functions
array	fft (const array &, int pad=-1)
	Fast Fourier Transform in one dimension. More...
array	fft2 (const array &, int nx=-1, int ny=-1)
	Fast Fourier Transform in two dimensions. More...
array	fft3 (const array &, const dim4 &dims=dim4(0))
	Fast Fourier Transform in three dimensions. More...
Inverse Fast Fourier Transform
array	ifft (const array &, int pad=-1)
	Inverse Fast Fourier Transform in one dimension. More...
array	ifft2 (const array &, int nx=-1, int ny=-1)
	Inverse Fast Fourier Transform in two dimensions. More...
array	ifft3 (const array &, const dim4 &dims=dim4(0))
	Inverse Fast Fourier Transform in three dimensions. More...
array	fir (int nb, const float *h_b, const array &x)
array	fir (const array &b, const array &x)
	Finite impulse response filtering. More...
array	iir (int nb, const float *h_b, int na, const float *h_a, const array &x)
array	iir (const array &b, const array &a, const array &x)
array	convolve (const array &f1, const array &f2, const array &signal, bool expand=false)
	Separable convolution (2D) with device arrays. More...
template<typename ty >
array	convolve (unsigned n1, const ty *h_f1, unsigned n2, const ty *h_f2, const array &signal, bool expand=false)
	Separable convolution (2D) with host arrays. More...
array	convolve (const array &signal, const array &filter, bool expand=false)
	Convolution (1D,2D,3D). More...
template<typename ty >
array	convolve (const array &signal, unsigned ndims, unsigned *dims, const ty *h_kernel, bool expand=false)
	Convolution (1D,2D,3D) with host filter. More...
array	approx1 (const array &Y, const array &Xi, char method='L', float offgrid=af::NaN)
	Interpolation in one dimension (1D). More...
array	approx2 (const array &Z, const array &Xi, const array &Yi, char method='L', float offgrid=af::NaN)
	Interpolation in two dimensions (2D): z=f(x,y) More...
afError	af_fft_S (dim3 dim_O, cfloat *d_O, dim3 dim_I, const float *d_I, unsigned batch, int dim, int direction)
	Single precision, One dimensional fft along dimension. More...
afError	af_fft_C (dim3 dim_O, cfloat *d_O, dim3 dim_I, const cfloat *d_I, unsigned batch, int dim, int direction)
	Complex, Single precision, One dimensional fft along dimension. More...
afError	af_fft_D (dim3 dim_O, cdouble *d_O, dim3 dim_I, const double *d_I, unsigned batch, int dim, int direction)
	Double precision, One dimensional fft along dimension. More...
afError	af_fft_Z (dim3 dim_O, cdouble *d_O, dim3 dim_I, const cdouble *d_I, unsigned batch, int dim, int direction)
	Complex, Double precision, One dimensional fft along dimension. More...
afError	af_fft2_S (unsigned xo, unsigned yo, cfloat *d_O, unsigned xi, unsigned yi, const float *d_I, unsigned batch, int direction)
	Single precision, two dimensional fft. More...
afError	af_fft2_C (unsigned xo, unsigned yo, cfloat *d_O, unsigned xi, unsigned yi, const cfloat *d_I, unsigned batch, int direction)
	Complex, Single precision, two dimensional fft. More...
afError	af_fft2_D (unsigned xo, unsigned yo, cdouble *d_O, unsigned xi, unsigned yi, const double *d_I, unsigned batch, int direction)
	Double precision, two dimensional fft. More...
afError	af_fft2_Z (unsigned xo, unsigned yo, cdouble *d_O, unsigned xi, unsigned yi, const cdouble *d_I, unsigned batch, int direction)
	Complex, Double precision, two dimensional fft. More...
afError	af_fft3_S (dim3 dims_O, cfloat *d_O, dim3 dims_I, const float *d_I, unsigned batch, int direction)
	Single precision, multi-dimensional fft. More...
afError	af_fft3_C (dim3 dims_O, cfloat *d_O, dim3 dims_I, const cfloat *d_I, unsigned batch, int direction)
	Complex, Single precision, multi-dimensional fft. More...
afError	af_fft3_D (dim3 dims_O, cdouble *d_O, dim3 dims_I, const double *d_I, unsigned batch, int direction)
	Double precision, multi-dimensional fft. More...
afError	af_fft3_Z (dim3 dims_O, cdouble *d_O, dim3 dims_I, const cdouble *d_I, unsigned batch, int direction)
	Complex, Double precision, multi-dimensional fft. More...
afError	af_fft_setplans (int max_plans)
	Set the cache size for CUfft plans. More...
afError	af_fft_clear (void)
	Clear the fft plan cache. More...
void	af_fft_info (void)
	Print status of fft plan cache. More...
afError	af_filter1D_S (float *d_out, unsigned len_in, const float *d_in, unsigned len_a, const float *h_a, unsigned len_b, const float *h_b, const float *d_init, float *d_final, unsigned Nin, unsigned Ninit)
afError	af_filter1D_C (cfloat *d_out, unsigned len_in, const cfloat *d_in, unsigned len_a, const float *h_a, unsigned len_b, const float *h_b, const cfloat *d_init, cfloat *d_final, unsigned Nin, unsigned Ninit)
	Complex, single-precision, Transposed direct form II filtering. More...
afError	af_filter1D_D (double *d_out, unsigned len_in, const double *d_in, unsigned len_a, const double *h_a, unsigned len_b, const double *h_b, const double *d_init, double *d_final, unsigned Nin, unsigned Ninit)
	Double-precision, Transposed direct form II filtering. More...
afError	af_filter1D_Z (cdouble *d_out, unsigned len_in, const cdouble *d_in, unsigned len_a, const double *h_a, unsigned len_b, const double *h_b, const cdouble *d_init, cdouble *d_final, unsigned Nin, unsigned Ninit)
	Complex, single-precision, Transposed direct form II filtering. More...
afError	af_conv_SS (float *d_out, unsigned ni, const float *d_in, unsigned batchi, unsigned nf, const float *d_filt, unsigned batchf, bool expand)
	Single precision, real input, real filter, one dimensional convolution. More...
afError	af_conv_CS (cfloat *d_out, unsigned ni, const cfloat *d_in, unsigned batchi, unsigned nf, const float *d_filt, unsigned batchf, bool expand)
	Single precision, complex input, real filter, one dimensional convolution. More...
afError	af_conv_CC (cfloat *d_out, unsigned ni, const cfloat *d_in, unsigned batchi, unsigned nf, const cfloat *d_filt, unsigned batchf, bool expand)
	Float precision, complex input, complex filter, one dimensional convolution. More...
afError	af_conv_DD (double *d_out, unsigned ni, const double *d_in, unsigned batchi, unsigned nf, const double *d_filt, unsigned batchf, bool expand)
	Single precision, real input, real filter, one dimensional convolution. More...
afError	af_conv_ZD (cdouble *d_out, unsigned ni, const cdouble *d_in, unsigned batchi, unsigned nf, const double *d_filt, unsigned batchf, bool expand)
	Double precision, complex input, real filter, one dimensional convolution. More...
afError	af_conv_ZZ (cdouble *d_out, unsigned ni, const cdouble *d_in, unsigned batchi, unsigned nf, const cdouble *d_filt, unsigned batchf, bool expand)
	Double precision, complex input, complex filter, one dimensional convolution. More...
afError	af_conv2_SS (float *d_out, unsigned mi, unsigned ni, const float *d_in, unsigned batch_in, unsigned mf, unsigned nf, const float *d_filt, unsigned batch_filt, bool expand)
afError	af_conv2_CS (cfloat *d_out, unsigned mi, unsigned ni, const cfloat *d_in, unsigned batch_in, unsigned mf, unsigned nf, const float *d_filt, unsigned batch_filt, bool expand)
	Single precision, complex input, real filter, two dimensional convolution. More...
afError	af_conv2_CC (cfloat *d_out, unsigned mi, unsigned ni, const cfloat *d_in, unsigned batch_in, unsigned mf, unsigned nf, const cfloat *d_filt, unsigned batch_filt, bool expand)
	Single precision, complex input, complex filter, two dimensional convolution. More...
afError	af_conv2_DD (double *d_out, unsigned mi, unsigned ni, const double *d_in, unsigned batch_in, unsigned mf, unsigned nf, const double *d_filt, unsigned batch_filt, bool expand)
	Double precision, real input, real filter, two dimensional convolution. More...
afError	af_conv2_ZD (cdouble *d_out, unsigned mi, unsigned ni, const cdouble *d_in, unsigned batch_in, unsigned mf, unsigned nf, const double *d_filt, unsigned batch_filt, bool expand)
	Double precision, complex input, real filter, two dimensional convolution. More...
afError	af_conv2_ZZ (cdouble *d_out, unsigned mi, unsigned ni, const cdouble *d_in, unsigned batch_in, unsigned mf, unsigned nf, const cdouble *d_filt, unsigned batch_filt, bool expand)
	Double precision, complex input, complex filter, two dimensional convolution. More...
afError	af_convn_SS (float *d_out, unsigned ndimsi, unsigned *dimsi, const float *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const float *d_filt, unsigned batchf, bool expand)
	Single precision, real input, real filter, multi-dimensional convolution. More...
afError	af_convn_CS (cfloat *d_out, unsigned ndimsi, unsigned *dimsi, const cfloat *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const float *d_filt, unsigned batchf, bool expand)
	Single precision, complex input, real filter, multi-dimensional convolution. More...
afError	af_convn_CC (cfloat *d_out, unsigned ndimsi, unsigned *dimsi, const cfloat *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const cfloat *d_filt, unsigned batchf, bool expand)
	Single precision, complex input, complex filter, multi-dimensional convolution. More...
afError	af_convn_DD (double *d_out, unsigned ndimsi, unsigned *dimsi, const double *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const double *d_filt, unsigned batchf, bool expand)
	Double precision, real input, real filter, multi-dimensional convolution. More...
afError	af_convn_ZD (cdouble *d_out, unsigned ndimsi, unsigned *dimsi, const cdouble *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const double *d_filt, unsigned batchf, bool expand)
	Double precision, complex input, real filter, multi-dimensional convolution. More...
afError	af_convn_ZZ (cdouble *d_out, unsigned ndimsi, unsigned *dimsi, const cdouble *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const cdouble *d_filt, unsigned batchf, bool expand)
	Double precision, complex input, complex filter, multi-dimensional convolution. More...
Device pointer interface: filter is host pointer
Multi-dimensional convolution (filter on host) Parameters [out] d_out The convolved output [in] ndimsi Number of dimensions in input signal [in] dimsi Dimensions of input signal [in] d_in Input signal [in] batchi Number of input signal tiles [in] ndimsf Number of dimensions in input filter [in] dimsf Dimensions of input filter [in] h_filt Input filter (on host) [in] batchf Number of input signal tiles [in] expand perform expanded convolution if true.
afError	af_convh_SS (float *d_out, unsigned ndimsi, unsigned *dimsi, const float *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const float *h_filt, unsigned batchf, bool expand)
	Single precision, real input, real filter, multi-dimensional convolution. More...
afError	af_convh_CS (cfloat *d_out, unsigned ndimsi, unsigned *dimsi, const cfloat *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const float *h_filt, unsigned batchf, bool expand)
	Single precision, complex input, real filter, multi-dimensional convolution. More...
afError	af_convh_DD (double *d_out, unsigned ndimsi, unsigned *dimsi, const double *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const double *h_filt, unsigned batchf, bool expand)
	Double precision, real input, real filter, multi-dimensional convolution. More...
afError	af_convh_ZD (cdouble *d_out, unsigned ndimsi, unsigned *dimsi, const cdouble *d_in, unsigned batchi, unsigned ndimsf, unsigned *dimsf, const double *h_filt, unsigned batchf, bool expand)
	Double precision, complex input, real filter, multi-dimensional convolution. More...
afError	af_scale2D_S (float *d_ZI, unsigned md, unsigned nd, const float *d_Z, int factor, char method)
	Rescale a Matrix. More...
afError	af_scale2D_D (double *d_ZI, unsigned md, unsigned nd, const double *d_Z, int factor, char method)
afError	af_scale2D_C (cfloat *d_ZI, unsigned md, unsigned nd, const cfloat *d_Z, int factor, char method)
afError	af_scale2D_Z (cdouble *d_ZI, unsigned md, unsigned nd, const cdouble *d_Z, int factor, char method)
afError	af_scale2D_c (char *d_ZI, unsigned md, unsigned nd, const char *d_Z, int factor, char method)
	Character (8-bit) rescale. More...
Vector Interpolation
Vector (1D) interpolation. Parameters [out] d_YI Interpolated function values [in] n Number of elements in inputs d_Y [in] d_Y Function values [in] batch_Y Number of tiles of d_Y [in] ni Number of elements in d_XI [in] d_XI Grid values to interpolate at [in] batch_XI Number of tiles of d_XI [in] method interpolation type ('N' nearest, 'L' linear, 'C' cubic) [in] offgrid Value for interpolations off the grid (i.e. out-of-bounds)
afError	af_approx1_S (float *d_YI, unsigned n, const float *d_Y, unsigned batch_Y, unsigned ni, const float *d_XI, unsigned batch_XI, char method, float offgrid)
afError	af_approx1_D (double *d_YI, unsigned n, const double *d_Y, unsigned batch_Y, unsigned ni, const double *d_XI, unsigned batch_XI, char method, float offgrid)
afError	af_approx1_C (cfloat *d_YI, unsigned n, const cfloat *d_Y, unsigned batch_Y, unsigned ni, const float *d_XI, unsigned batch_XI, char method, float offgrid)
afError	af_approx1_Z (cdouble *d_YI, unsigned n, const cdouble *d_Y, unsigned batch_Y, unsigned ni, const double *d_XI, unsigned batch_XI, char method, float offgrid)
Matrix Interpolation
Matrix (2D) interpolation. Parameters [out] d_ZI Interpolated function values [in] nx Number of rows in d_Z [in] ny Number of columns in d_Z [in] d_Z Function values [in] batch_Z Number of tiles of d_Z [in] ni Number of elements in d_XI, d_YI [in] d_XI X Grid or Vector values to interpolate at [in] batch_XI Number of tiles of d_XI [in] d_YI Y Grid or Vector values to interpolate at [in] batch_YI Number of tiles of d_YI [in] method interpolation type ('N' nearest, 'L' linear, 'C' cubic) [in] offgrid Value for interpolations off the grid (i.e. out-of-bounds)
afError	af_approx2_S (float *d_ZI, unsigned nx, unsigned ny, const float *d_Z, unsigned batch_Z, unsigned ni, const float *d_XI, unsigned batch_XI, const float *d_YI, unsigned batch_YI, char method, float offgrid)
afError	af_approx2_D (double *d_ZI, unsigned nx, unsigned ny, const double *d_Z, unsigned batch_Z, unsigned ni, const double *d_XI, unsigned batch_XI, const double *d_YI, unsigned batch_YI, char method, float offgrid)
afError	af_approx2_C (cfloat *d_ZI, unsigned nx, unsigned ny, const cfloat *d_Z, unsigned batch_Z, unsigned ni, const float *d_XI, unsigned batch_XI, const float *d_YI, unsigned batch_YI, char method, float offgrid)
afError	af_approx2_Z (cdouble *d_ZI, unsigned nx, unsigned ny, const cdouble *d_Z, unsigned batch_Z, unsigned ni, const double *d_XI, unsigned batch_XI, const double *d_YI, unsigned batch_YI, char method, float offgrid)