Mercurial > octave
view libinterp/corefcn/fftn.cc @ 21139:538b57866b90
consistently use "typename" intead of "class" in template declarations
* Object.h, QtHandlesUtils.cc, QtHandlesUtils.h, ToolBarButton.cc,
ToolBarButton.h, Cell.h, __lin_interpn__.cc, bitfcns.cc, bsxfun.cc,
cellfun.cc, data.cc, filter.cc, gcd.cc, graphics.cc, help.cc, kron.cc,
lookup.cc, ls-mat5.cc, ls-oct-text.h, lu.cc, max.cc, mgorth.cc,
oct-map.cc, oct-map.h, oct-stream.cc, oct-stream.h, octave-link.h,
pr-output.cc, profiler.h, schur.cc, sparse-xdiv.cc, sparse-xpow.cc,
sqrtm.cc, symtab.h, tril.cc, typecast.cc, variables.cc, xdiv.cc,
zfstream.h, __init_fltk__.cc, __magick_read__.cc, chol.cc, qr.cc,
ov-base-diag.cc, ov-base-diag.h, ov-base-int.cc, ov-base-int.h,
ov-base-mat.cc, ov-base-mat.h, ov-base-scalar.cc, ov-base-scalar.h,
ov-base-sparse.cc, ov-base-sparse.h, ov-base.h, ov-classdef.cc,
ov-int-traits.h, ov-java.h, ov-usr-fcn.h, ov.cc, ov.h,
op-dms-template.cc, oct-parse.in.yy, parse.h, pt-mat.cc, Array-b.cc,
Array.cc, Array.h, CDiagMatrix.h, CMatrix.h, CNDArray.h,
DiagArray2.cc, DiagArray2.h, MArray.cc, MArray.h, MDiagArray2.cc,
MDiagArray2.h, MSparse.cc, MSparse.h, MatrixType.cc, Sparse.cc,
Sparse.h, dDiagMatrix.h, dMatrix.h, dNDArray.h, fCDiagMatrix.h,
fCMatrix.h, fCNDArray.h, fDiagMatrix.h, fMatrix.h, fNDArray.h,
idx-vector.cc, idx-vector.h, intNDArray.cc, intNDArray.h, DET.h,
base-aepbal.h, base-lu.cc, base-lu.h, base-qr.cc, base-qr.h,
bsxfun-defs.cc, eigs-base.cc, lo-mappers.h, lo-specfun.cc,
lo-specfun.h, oct-convn.cc, oct-fftw.cc, oct-norm.cc,
sparse-base-chol.cc, sparse-base-chol.h, sparse-base-lu.cc,
sparse-base-lu.h, sparse-dmsolve.cc, mx-inlines.cc,
action-container.h, base-list.h, lo-traits.h, lo-utils.h,
oct-base64.h, oct-binmap.h, oct-cmplx.h, oct-inttypes.cc,
oct-inttypes.h, oct-locbuf.h, oct-refcount.h, oct-sort.cc, oct-sort.h:
Use "typename" instead of "class" in template declarations.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Sun, 24 Jan 2016 13:50:04 -0500 |
parents | e39e05d90788 |
children | fcac5dbbf9ed |
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/* Copyright (C) 2004-2015 David Bateman This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "lo-mappers.h" #include "defun.h" #include "error.h" #include "errwarn.h" #include "ovl.h" #include "utils.h" // This function should be merged with Fifft. #if defined (HAVE_FFTW) #define FFTSRC "@sc{fftw}" #else #define FFTSRC "@sc{fftpack}" #endif static octave_value do_fftn (const octave_value_list &args, const char *fcn, int type) { int nargin = args.length (); if (nargin < 1 || nargin > 2) print_usage (); octave_value retval; octave_value arg = args(0); dim_vector dims = arg.dims (); for (int i = 0; i < dims.length (); i++) if (dims(i) < 0) return retval; if (nargin > 1) { Matrix val = args(1).xmatrix_value ("%s: SIZE must be a vector of length dim", fcn); if (val.rows () > val.columns ()) val = val.transpose (); if (val.columns () != dims.length () || val.rows () != 1) error ("%s: SIZE must be a vector of length dim", fcn); for (int i = 0; i < dims.length (); i++) { if (xisnan (val(i,0))) error ("%s: SIZE has invalid NaN entries", fcn); else if (NINTbig (val(i,0)) < 0) error ("%s: all dimensions in SIZE must be greater than zero", fcn); else dims(i) = NINTbig(val(i,0)); } } if (dims.all_zero ()) { if (arg.is_single_type ()) return octave_value (FloatMatrix ()); else return octave_value (Matrix ()); } if (arg.is_single_type ()) { if (arg.is_real_type ()) { FloatNDArray nda = arg.float_array_value (); nda.resize (dims, 0.0); retval = (type != 0 ? nda.ifourierNd () : nda.fourierNd ()); } else { FloatComplexNDArray cnda = arg.float_complex_array_value (); cnda.resize (dims, 0.0); retval = (type != 0 ? cnda.ifourierNd () : cnda.fourierNd ()); } } else { if (arg.is_real_type ()) { NDArray nda = arg.array_value (); nda.resize (dims, 0.0); retval = (type != 0 ? nda.ifourierNd () : nda.fourierNd ()); } else if (arg.is_complex_type ()) { ComplexNDArray cnda = arg.complex_array_value (); cnda.resize (dims, 0.0); retval = (type != 0 ? cnda.ifourierNd () : cnda.fourierNd ()); } else err_wrong_type_arg (fcn, arg); } return retval; } DEFUN (fftn, args, , "-*- texinfo -*-\n\ @deftypefn {} {} fftn (@var{A})\n\ @deftypefnx {} {} fftn (@var{A}, @var{size})\n\ Compute the N-dimensional discrete Fourier transform of @var{A} using\n\ a Fast Fourier Transform (FFT) algorithm.\n\ \n\ The optional vector argument @var{size} may be used specify the dimensions\n\ of the array to be used. If an element of @var{size} is smaller than the\n\ corresponding dimension of @var{A}, then the dimension of @var{A} is\n\ truncated prior to performing the FFT@. Otherwise, if an element of\n\ @var{size} is larger than the corresponding dimension then @var{A} is\n\ resized and padded with zeros.\n\ @seealso{ifftn, fft, fft2, fftw}\n\ @end deftypefn") { return do_fftn (args, "fftn", 0); } DEFUN (ifftn, args, , "-*- texinfo -*-\n\ @deftypefn {} {} ifftn (@var{A})\n\ @deftypefnx {} {} ifftn (@var{A}, @var{size})\n\ Compute the inverse N-dimensional discrete Fourier transform of @var{A}\n\ using a Fast Fourier Transform (FFT) algorithm.\n\ \n\ The optional vector argument @var{size} may be used specify the dimensions\n\ of the array to be used. If an element of @var{size} is smaller than the\n\ corresponding dimension of @var{A}, then the dimension of @var{A} is\n\ truncated prior to performing the inverse FFT@. Otherwise, if an element of\n\ @var{size} is larger than the corresponding dimension then @var{A} is\n\ resized and padded with zeros.\n\ @seealso{fftn, ifft, ifft2, fftw}\n\ @end deftypefn") { return do_fftn (args, "ifftn", 1); }