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annotate libinterp/corefcn/fft2.cc @ 21724:aba2e6293dd8

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use "#if ..." consistently instead of "#ifdef" and "#ifndef" * configure.ac, Doxyfile.in, make_int.cc, Backend.cc, BaseControl.cc, ButtonControl.cc, Canvas.cc, CheckBoxControl.cc, Container.cc, ContextMenu.cc, EditControl.cc, Figure.cc, FigureWindow.cc, GLCanvas.cc, KeyMap.cc, ListBoxControl.cc, Logger.cc, Menu.cc, MouseModeActionGroup.cc, Object.cc, ObjectFactory.cc, ObjectProxy.cc, Panel.cc, PopupMenuControl.cc, PushButtonControl.cc, PushTool.cc, QtHandlesUtils.cc, RadioButtonControl.cc, SliderControl.cc, TextControl.cc, TextEdit.cc, ToggleButtonControl.cc, ToggleTool.cc, ToolBar.cc, __init_qt__.cc, annotation-dialog.cc, gl-select.cc, module.mk, color-picker.cc, dialog.cc, documentation-dock-widget.cc, files-dock-widget.cc, find-files-dialog.cc, find-files-model.cc, history-dock-widget.cc, liboctgui-build-info.in.cc, file-editor-tab.cc, file-editor.cc, find-dialog.cc, marker.cc, marker.h, octave-qscintilla.cc, octave-txt-lexer.cc, main-window.cc, octave-cmd.cc, octave-dock-widget.cc, octave-gui.cc, octave-interpreter.cc, octave-qt-link.cc, parser.cc, webinfo.cc, resource-manager.cc, settings-dialog.cc, shortcut-manager.cc, terminal-dock-widget.cc, thread-manager.cc, welcome-wizard.cc, workspace-model.cc, workspace-view.cc, build-env.in.cc, Cell.cc, __contourc__.cc, __dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __ilu__.cc, __lin_interpn__.cc, __luinc__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, cdisplay.c, cdisplay.h, cellfun.cc, coct-hdf5-types.c, colloc.cc, comment-list.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc, defaults.in.h, defun.cc, det.cc, dirfns.cc, display.cc, dlmread.cc, dot.cc, dynamic-ld.cc, eig.cc, ellipj.cc, error.cc, errwarn.cc, event-queue.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, gammainc.cc, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, gl-render.cc, gl2ps-print.cc, graphics.cc, gripes.cc, hash.cc, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, jit-ir.cc, jit-ir.h, jit-typeinfo.cc, jit-typeinfo.h, jit-util.cc, jit-util.h, kron.cc, load-path.cc, load-save.cc, lookup.cc, ls-ascii-helper.cc, ls-hdf5.cc, ls-mat-ascii.cc, ls-mat4.cc, ls-mat5.cc, ls-oct-binary.cc, ls-oct-text.cc, ls-oct-text.h, ls-utils.cc, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex.cc, mex.h, mexproto.h, mgorth.cc, nproc.cc, oct-errno.in.cc, oct-fstrm.cc, oct-hdf5-types.cc, oct-hdf5-types.h, oct-hist.cc, oct-iostrm.cc, oct-lvalue.cc, oct-map.cc, oct-prcstrm.cc, oct-procbuf.cc, oct-stdstrm.h, oct-stream.cc, oct-strstrm.cc, oct-tex-lexer.in.ll, oct-tex-parser.in.yy, octave-link.cc, ordschur.cc, pager.cc, pinv.cc, pr-output.cc, procstream.cc, profiler.cc, psi.cc, pt-jit.cc, pt-jit.h, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sighandlers.cc, sighandlers.h, siglist.c, siglist.h, sparse-xdiv.cc, sparse-xpow.cc, sparse.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symtab.cc, syscalls.cc, sysdep.cc, text-renderer.cc, time.cc, toplev.cc, tril.cc, tsearch.cc, txt-eng.cc, typecast.cc, urlwrite.cc, utils.cc, variables.cc, xdiv.cc, xgl2ps.c, xnorm.cc, xpow.cc, zfstream.cc, zfstream.h, __delaunayn__.cc, __eigs__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __osmesa_print__.cc, __voronoi__.cc, amd.cc, audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc, convhulln.cc, dmperm.cc, fftw.cc, qr.cc, symbfact.cc, symrcm.cc, liboctinterp-build-info.in.cc, mkbuiltins, mkops, ov-base.cc, ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.cc, ov-cell.cc, ov-ch-mat.cc, ov-class.cc, ov-classdef.cc, ov-colon.cc, ov-complex.cc, ov-cs-list.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-dld-fcn.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-fcn.cc, ov-float.cc, ov-flt-complex.cc, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-diag.cc, ov-flt-re-mat.cc, ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.cc, ov-lazy-idx.cc, ov-mex-fcn.cc, ov-null-mat.cc, ov-oncleanup.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc, ov-re-sparse.cc, ov-scalar.cc, ov-str-mat.cc, ov-struct.cc, ov-typeinfo.cc, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ovl.cc, octave.cc, octave.h, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cdm-cm.cc, op-cdm-dm.cc, op-cdm-m.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cdm.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-dm.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-cdm.cc, op-dm-cm.cc, op-dm-dm.cc, op-dm-m.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-double-conv.cc, op-fcdm-fcdm.cc, op-fcdm-fcm.cc, op-fcdm-fdm.cc, op-fcdm-fm.cc, op-fcm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fdm.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fcdm.cc, op-fdm-fcm.cc, op-fdm-fdm.cc, op-fdm-fm.cc, op-float-conv.cc, op-fm-fcdm.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fdm.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-int-conv.cc, op-m-cdm.cc, op-m-cm.cc, op-m-cs.cc, op-m-dm.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, lex.ll, oct-parse.in.yy, pt-arg-list.cc, pt-array-list.cc, pt-assign.cc, pt-binop.cc, pt-bp.cc, pt-cbinop.cc, pt-cell.cc, pt-check.cc, pt-classdef.cc, pt-cmd.cc, pt-colon.cc, pt-const.cc, pt-decl.cc, pt-eval.cc, pt-except.cc, pt-exp.cc, pt-fcn-handle.cc, pt-funcall.cc, pt-id.cc, pt-idx.cc, pt-jump.cc, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-misc.cc, pt-pr-code.cc, pt-select.cc, pt-stmt.cc, pt-unop.cc, pt.cc, token.cc, Array-jit.cc, Array-tc.cc, version.cc, Array-C.cc, Array-b.cc, Array-ch.cc, Array-d.cc, Array-f.cc, Array-fC.cc, Array-i.cc, Array-idx-vec.cc, Array-s.cc, Array-str.cc, Array-util.cc, Array-voidp.cc, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc, CNDArray.cc, CRowVector.cc, CSparse.cc, MArray-C.cc, MArray-d.cc, MArray-f.cc, MArray-fC.cc, MArray-i.cc, MArray-s.cc, MSparse-C.cc, MSparse-d.cc, MatrixType.cc, PermMatrix.cc, Range.cc, Sparse-C.cc, Sparse-b.cc, Sparse-d.cc, boolMatrix.cc, boolNDArray.cc, boolSparse.cc, chMatrix.cc, chNDArray.cc, dColVector.cc, dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, dim-vector.cc, dim-vector.h, fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc, fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc, idx-vector.cc, int16NDArray.cc, int32NDArray.cc, int64NDArray.cc, int8NDArray.cc, uint16NDArray.cc, uint32NDArray.cc, uint64NDArray.cc, uint8NDArray.cc, Faddeeva.cc, blaswrap.c, cquit.c, f77-extern.cc, f77-fcn.c, f77-fcn.h, lo-error.c, lo-error.h, quit.cc, quit.h, liboctave-build-info.in.cc, CollocWt.cc, DASPK.cc, DASRT.cc, DASSL.cc, EIG.cc, LSODE.cc, ODES.cc, Quad.cc, aepbalance.cc, chol.cc, eigs-base.cc, fEIG.cc, gepbalance.cc, hess.cc, lo-mappers.cc, lo-specfun.cc, lu.cc, oct-convn.cc, oct-fftw.cc, oct-norm.cc, oct-rand.cc, oct-spparms.cc, qr.cc, qrp.cc, randmtzig.cc, randpoisson.cc, schur.cc, sparse-chol.cc, sparse-dmsolve.cc, sparse-lu.cc, sparse-qr.cc, svd.cc, mk-ops.awk, mx-defs.h, dir-ops.cc, file-ops.cc, file-stat.cc, lo-sysdep.cc, mach-info.cc, oct-env.cc, oct-group.cc, oct-passwd.cc, oct-syscalls.cc, oct-time.cc, oct-uname.cc, pathlen.h, syswait.h, cmd-edit.cc, cmd-hist.cc, data-conv.cc, f2c-main.c, glob-match.cc, kpse.cc, lo-array-errwarn.cc, lo-array-gripes.cc, lo-cutils.c, lo-cutils.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-utils.cc, oct-base64.cc, oct-glob.cc, oct-inttypes.cc, oct-inttypes.h, oct-locbuf.cc, oct-mutex.cc, oct-rl-edit.c, oct-rl-edit.h, oct-rl-hist.c, oct-rl-hist.h, oct-shlib.cc, oct-sort.cc, pathsearch.cc, singleton-cleanup.cc, sparse-sort.cc, sparse-util.cc, statdefs.h, str-vec.cc, unwind-prot.cc, url-transfer.cc, acinclude.m4, display-available.c, display-available.h, main-cli.cc, main-gui.cc, main.in.cc, mkoctfile.in.cc, octave-build-info.in.cc, octave-config.in.cc, shared-fcns.h: Use "#if ..." consistently instead of "#ifdef" and "#ifndef".
author John W. Eaton <jwe@octave.org>
date Tue, 17 May 2016 12:09:30 -0400
parents 53728df3e4c9
children 2aef506f3fec
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1 /*
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2
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3 Copyright (C) 1997-2015 David Bateman
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4 Copyright (C) 1996-1997 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if defined (HAVE_CONFIG_H)
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25 # include "config.h"
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26 #endif
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27
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28 #include "lo-mappers.h"
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29
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30 #include "defun.h"
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31 #include "error.h"
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32 #include "errwarn.h"
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33 #include "ovl.h"
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34 #include "utils.h"
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35
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36 // This function should be merged with Fifft.
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37
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38 #if defined (HAVE_FFTW)
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39 # define FFTSRC "@sc{fftw}"
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40 #else
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41 # define FFTSRC "@sc{fftpack}"
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42 #endif
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44 static octave_value
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45 do_fft2 (const octave_value_list &args, const char *fcn, int type)
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46 {
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47 int nargin = args.length ();
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48
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49 if (nargin < 1 || nargin > 3)
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50 print_usage ();
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51
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52 octave_value retval;
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53 octave_value arg = args(0);
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54 dim_vector dims = arg.dims ();
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55 octave_idx_type n_rows = -1;
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57 if (nargin > 1)
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58 {
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59 double dval = args(1).double_value ();
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60 if (xisnan (dval))
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61 error ("%s: number of rows (N) cannot be NaN", fcn);
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63 n_rows = NINTbig (dval);
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64 if (n_rows < 0)
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65 error ("%s: number of rows (N) must be greater than zero", fcn);
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66 }
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67
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68 octave_idx_type n_cols = -1;
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69 if (nargin > 2)
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70 {
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diff changeset
71 double dval = args(2).double_value ();
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72 if (xisnan (dval))
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73 error ("%s: number of columns (M) cannot be NaN", fcn);
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74
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75 n_cols = NINTbig (dval);
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76 if (n_cols < 0)
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77 error ("%s: number of columns (M) must be greater than zero", fcn);
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78 }
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79
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80 for (int i = 0; i < dims.ndims (); i++)
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81 if (dims(i) < 0)
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82 return retval;
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83
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84 if (n_rows < 0)
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85 n_rows = dims(0);
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86 else
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87 dims(0) = n_rows;
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88
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89 if (n_cols < 0)
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90 n_cols = dims(1);
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91 else
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92 dims(1) = n_cols;
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93
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94 if (dims.all_zero () || n_rows == 0 || n_cols == 0)
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95 {
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96 if (arg.is_single_type ())
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97 return octave_value (FloatMatrix ());
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98 else
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99 return octave_value (Matrix ());
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100 }
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101
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102 if (arg.is_single_type ())
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103 {
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104 if (arg.is_real_type ())
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105 {
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106 FloatNDArray nda = arg.float_array_value ();
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107
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108 nda.resize (dims, 0.0);
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109 retval = (type != 0 ? nda.ifourier2d () : nda.fourier2d ());
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110 }
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111 else
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112 {
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113 FloatComplexNDArray cnda = arg.float_complex_array_value ();
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114
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115 cnda.resize (dims, 0.0);
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116 retval = (type != 0 ? cnda.ifourier2d () : cnda.fourier2d ());
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117 }
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118 }
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119 else
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120 {
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121 if (arg.is_real_type ())
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122 {
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123 NDArray nda = arg.array_value ();
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124
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125 nda.resize (dims, 0.0);
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126 retval = (type != 0 ? nda.ifourier2d () : nda.fourier2d ());
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127 }
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128 else if (arg.is_complex_type ())
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129 {
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130 ComplexNDArray cnda = arg.complex_array_value ();
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131
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132 cnda.resize (dims, 0.0);
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133 retval = (type != 0 ? cnda.ifourier2d () : cnda.fourier2d ());
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134 }
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diff changeset
135 else
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136 err_wrong_type_arg (fcn, arg);
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137 }
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138
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diff changeset
139 return retval;
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parents:
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140 }
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diff changeset
141
15039
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diff changeset
142 DEFUN (fft2, args, ,
17787
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diff changeset
143 "-*- texinfo -*-\n\
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diff changeset
144 @deftypefn {} {} fft2 (@var{A})\n\
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145 @deftypefnx {} {} fft2 (@var{A}, @var{m}, @var{n})\n\
12160
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diff changeset
146 Compute the two-dimensional discrete Fourier transform of @var{A} using\n\
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diff changeset
147 a Fast Fourier Transform (FFT) algorithm.\n\
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diff changeset
148 \n\
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diff changeset
149 The optional arguments @var{m} and @var{n} may be used specify the number of\n\
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parents: 19697
diff changeset
150 rows and columns of @var{A} to use. If either of these is larger than the\n\
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151 size of @var{A}, @var{A} is resized and padded with zeros.\n\
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152 \n\
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diff changeset
153 If @var{A} is a multi-dimensional matrix, each two-dimensional sub-matrix\n\
12160
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diff changeset
154 of @var{A} is treated separately.\n\
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155 @seealso{ifft2, fft, fftn, fftw}\n\
5642
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diff changeset
156 @end deftypefn")
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diff changeset
157 {
4782
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158 return do_fft2 (args, "fft2", 0);
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diff changeset
159 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
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diff changeset
160
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
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parents: 4233
diff changeset
161
15039
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diff changeset
162 DEFUN (ifft2, args, ,
17787
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diff changeset
163 "-*- texinfo -*-\n\
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diff changeset
164 @deftypefn {} {} ifft2 (@var{A})\n\
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diff changeset
165 @deftypefnx {} {} ifft2 (@var{A}, @var{m}, @var{n})\n\
12160
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166 Compute the inverse two-dimensional discrete Fourier transform of @var{A}\n\
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diff changeset
167 using a Fast Fourier Transform (FFT) algorithm.\n\
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diff changeset
168 \n\
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169 The optional arguments @var{m} and @var{n} may be used specify the number of\n\
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170 rows and columns of @var{A} to use. If either of these is larger than the\n\
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diff changeset
171 size of @var{A}, @var{A} is resized and padded with zeros.\n\
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172 \n\
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diff changeset
173 If @var{A} is a multi-dimensional matrix, each two-dimensional sub-matrix\n\
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diff changeset
174 of @var{A} is treated separately\n\
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diff changeset
175 @seealso{fft2, ifft, ifftn, fftw}\n\
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diff changeset
176 @end deftypefn")
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177 {
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178 return do_fft2 (args, "ifft2", 1);
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diff changeset
179 }
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180
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181 /*
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182 %% Author: David Billinghurst (David.Billinghurst@riotinto.com.au)
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183 %% Comalco Research and Technology
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184 %% 02 May 2000
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185 %!test
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186 %! M = 16;
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187 %! N = 8;
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188 %!
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189 %! m = 5;
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190 %! n = 3;
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191 %!
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192 %! x = 2*pi*(0:1:M-1)/M;
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193 %! y = 2*pi*(0:1:N-1)/N;
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194 %! sx = cos (m*x);
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195 %! sy = sin (n*y);
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196 %! s = kron (sx',sy);
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197 %! S = fft2 (s);
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198 %! answer = kron (fft (sx)', fft (sy));
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199 %! assert (S, answer, 4*M*N*eps);
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200
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201 %% Author: David Billinghurst (David.Billinghurst@riotinto.com.au)
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202 %% Comalco Research and Technology
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203 %% 02 May 2000
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diff changeset
204 %!test
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205 %! M = 12;
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206 %! N = 7;
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207 %!
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208 %! m = 3;
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209 %! n = 2;
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210 %!
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211 %! x = 2*pi*(0:1:M-1)/M;
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212 %! y = 2*pi*(0:1:N-1)/N;
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213 %!
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214 %! sx = cos (m*x);
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215 %! sy = cos (n*y);
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216 %!
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217 %! S = kron (fft (sx)', fft (sy));
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218 %! answer = kron (sx', sy);
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219 %! s = ifft2 (S);
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220 %!
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221 %! assert (s, answer, 30*eps);
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222
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223
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224 %% Author: David Billinghurst (David.Billinghurst@riotinto.com.au)
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225 %% Comalco Research and Technology
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226 %% 02 May 2000
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227 %!test
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228 %! M = 16;
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229 %! N = 8;
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230 %!
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231 %! m = 5;
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232 %! n = 3;
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233 %!
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234 %! x = 2*pi*(0:1:M-1)/M;
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235 %! y = 2*pi*(0:1:N-1)/N;
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236 %! sx = single (cos (m*x));
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237 %! sy = single (sin (n*y));
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238 %! s = kron (sx', sy);
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239 %! S = fft2 (s);
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240 %! answer = kron (fft (sx)', fft (sy));
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241 %! assert (S, answer, 4*M*N*eps ("single"));
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242
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243 %% Author: David Billinghurst (David.Billinghurst@riotinto.com.au)
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244 %% Comalco Research and Technology
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245 %% 02 May 2000
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246 %!test
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247 %! M = 12;
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248 %! N = 7;
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249 %!
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250 %! m = 3;
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251 %! n = 2;
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252 %!
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253 %! x = single (2*pi*(0:1:M-1)/M);
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254 %! y = single (2*pi*(0:1:N-1)/N);
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255 %!
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256 %! sx = cos (m*x);
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257 %! sy = cos (n*y);
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258 %!
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259 %! S = kron (fft (sx)', fft (sy));
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260 %! answer = kron (sx', sy);
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261 %! s = ifft2 (S);
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262 %!
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263 %! assert (s, answer, 30*eps ("single"));
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264 */