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annotate liboctave/array/dim-vector.cc @ 31771:21f9b34eb893

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maint: Eliminate "(void)" in C++ function prototypes/declarations. * mk-opts.pl, external.txi, embedded.cc, make_int.cc, standalone.cc, standalonebuiltin.cc, BaseControl.cc, BaseControl.h, ButtonControl.cc, ButtonControl.h, ButtonGroup.cc, ButtonGroup.h, Canvas.cc, Canvas.h, CheckBoxControl.cc, CheckBoxControl.h, Container.cc, Container.h, ContextMenu.cc, ContextMenu.h, EditControl.cc, EditControl.h, Figure.cc, Figure.h, FigureWindow.cc, FigureWindow.h, GLCanvas.cc, GLCanvas.h, GenericEventNotify.h, KeyMap.cc, ListBoxControl.cc, ListBoxControl.h, Logger.cc, Logger.h, Menu.cc, Menu.h, MenuContainer.h, Object.cc, Object.h, ObjectProxy.cc, ObjectProxy.h, Panel.cc, Panel.h, PopupMenuControl.cc, PopupMenuControl.h, PushButtonControl.cc, PushButtonControl.h, PushTool.cc, PushTool.h, RadioButtonControl.cc, RadioButtonControl.h, SliderControl.cc, SliderControl.h, Table.cc, Table.h, TextControl.cc, TextControl.h, TextEdit.h, ToggleButtonControl.cc, ToggleButtonControl.h, ToggleTool.cc, ToggleTool.h, ToolBar.cc, ToolBar.h, ToolBarButton.cc, ToolBarButton.h, gl-select.cc, gl-select.h, qopengl-functions.h, qt-graphics-toolkit.h, qdialog.cpp, qfontdialog.cpp, qprintdialog_win.cpp, liboctgui-build-info.h, liboctgui-build-info.in.cc, color-picker.cc, color-picker.h, command-widget.cc, command-widget.h, community-news.cc, community-news.h, dialog.cc, dialog.h, documentation-bookmarks.cc, documentation-bookmarks.h, documentation-dock-widget.cc, documentation-dock-widget.h, documentation.cc, documentation.h, dw-main-window.cc, dw-main-window.h, external-editor-interface.cc, external-editor-interface.h, files-dock-widget.cc, files-dock-widget.h, find-files-dialog.cc, find-files-dialog.h, find-files-model.cc, find-files-model.h, gui-preferences.cc, gui-preferences.h, gui-settings.cc, gui-settings.h, history-dock-widget.cc, history-dock-widget.h, interpreter-qobject.cc, interpreter-qobject.h, file-editor-interface.h, file-editor-tab.cc, file-editor-tab.h, file-editor.cc, file-editor.h, find-dialog.cc, find-dialog.h, marker.cc, marker.h, octave-qscintilla.cc, octave-qscintilla.h, octave-txt-lexer.cc, octave-txt-lexer.h, main-window.cc, main-window.h, news-reader.cc, news-reader.h, octave-dock-widget.cc, octave-dock-widget.h, octave-qobject.cc, octave-qobject.h, qt-application.cc, qt-application.h, qt-interpreter-events.cc, qt-interpreter-events.h, release-notes.cc, release-notes.h, set-path-dialog.cc, set-path-dialog.h, set-path-model.cc, set-path-model.h, settings-dialog.cc, settings-dialog.h, shortcuts-tree-widget.cc, shortcuts-tree-widget.h, tab-bar.cc, tab-bar.h, terminal-dock-widget.cc, terminal-dock-widget.h, variable-editor-model.cc, variable-editor-model.h, variable-editor.cc, variable-editor.h, welcome-wizard.cc, welcome-wizard.h, workspace-model.cc, workspace-model.h, workspace-view.cc, workspace-view.h, build-env.h, Cell.cc, Cell.h, __contourc__.cc, __magick_read__.cc, auto-shlib.cc, auto-shlib.h, base-text-renderer.h, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, call-stack.cc, call-stack.h, debug.cc, defaults.cc, defaults.h, defun.cc, display.cc, display.h, dynamic-ld.cc, dynamic-ld.h, environment.cc, environment.h, error.cc, error.h, errwarn.cc, errwarn.h, event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, ft-text-renderer.cc, ft-text-renderer.h, genprops.awk, gh-manager.cc, gh-manager.h, gl-render.cc, gl-render.h, gl2ps-print.cc, graphics-toolkit.h, graphics.cc, graphics.in.h, gtk-manager.cc, gtk-manager.h, help.cc, help.h, hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h, jsondecode.cc, latex-text-renderer.cc, latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h, ls-hdf5.cc, ls-hdf5.h, mxarray.h, oct-errno.h, oct-errno.in.cc, oct-fstrm.cc, oct-fstrm.h, oct-handle.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h, oct-map.cc, oct-map.h, oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, pager.cc, pager.h, pr-flt-fmt.cc, pr-flt-fmt.h, pr-output.cc, pr-output.h, procstream.cc, procstream.h, settings.cc, settings.h, sighandlers.cc, sighandlers.h, stack-frame.cc, stack-frame.h, svd.cc, syminfo.cc, syminfo.h, symrec.cc, symrec.h, symscope.cc, symscope.h, symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, toplev.cc, url-handle-manager.cc, url-handle-manager.h, variables.cc, xpow.cc, __init_fltk__.cc, __init_gnuplot__.cc, __ode15__.cc, audiodevinfo.cc, gzip.cc, liboctinterp-build-info.h, liboctinterp-build-info.in.cc, mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h, cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h, cdef-utils.cc, cdef-utils.h, 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.cc, ov-base.h, ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc, ov-bool.h, ov-builtin.cc, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-ch-mat.cc, ov-ch-mat.h, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.cc, ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc, ov-cx-sparse.h, ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.cc, ov-fcn.h, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h, ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h, ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-java.h, ov-lazy-idx.cc, ov-lazy-idx.h, ov-legacy-range.cc, ov-legacy-range.h, ov-magic-int.cc, ov-magic-int.h, ov-mex-fcn.cc, ov-mex-fcn.h, ov-null-mat.cc, ov-null-mat.h, ov-oncleanup.cc, ov-oncleanup.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h, ov-re-diag.cc, ov-re-diag.h, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-re-sparse.h, ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-str-mat.h, ov-struct.cc, ov-struct.h, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, ovl.cc, ovl.h, octave.cc, octave.h, anon-fcn-validator.h, bp-table.cc, bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.h, pt-cbinop.h, pt-cell.h, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-walk.h, pt.cc, pt.h, token.cc, token.h, usage.h, Array-base.cc, Array.h, CColVector.cc, CColVector.h, CDiagMatrix.cc, CDiagMatrix.h, CMatrix.cc, CMatrix.h, CNDArray.cc, CNDArray.h, CRowVector.cc, CRowVector.h, CSparse.cc, CSparse.h, DiagArray2.cc, DiagArray2.h, MArray.cc, MArray.h, MDiagArray2.h, MSparse.h, MatrixType.cc, MatrixType.h, PermMatrix.cc, PermMatrix.h, Range.cc, Range.h, Sparse-b.cc, Sparse.cc, Sparse.h, boolMatrix.cc, boolMatrix.h, boolNDArray.cc, boolNDArray.h, boolSparse.cc, boolSparse.h, chMatrix.h, chNDArray.h, dColVector.cc, dColVector.h, dDiagMatrix.cc, dDiagMatrix.h, dMatrix.cc, dMatrix.h, dNDArray.cc, dNDArray.h, dRowVector.cc, dRowVector.h, dSparse.cc, dSparse.h, dim-vector.cc, dim-vector.h, fCColVector.cc, fCColVector.h, fCDiagMatrix.cc, fCDiagMatrix.h, fCMatrix.cc, fCMatrix.h, fCNDArray.cc, fCNDArray.h, fCRowVector.cc, fCRowVector.h, fColVector.cc, fColVector.h, fDiagMatrix.cc, fDiagMatrix.h, fMatrix.cc, fMatrix.h, fNDArray.cc, fNDArray.h, fRowVector.cc, fRowVector.h, idx-vector.cc, idx-vector.h, intNDArray.cc, intNDArray.h, liboctave-build-info.h, liboctave-build-info.in.cc, CollocWt.cc, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h, DAERTFunc.h, DASPK.cc, DASPK.h, DASRT.cc, DASRT.h, DASSL.cc, DASSL.h, DET.h, EIG.h, LSODE.cc, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h, aepbalance.cc, aepbalance.h, base-dae.h, base-de.h, chol.cc, chol.h, eigs-base.cc, fEIG.h, gepbalance.h, gsvd.cc, gsvd.h, hess.h, lu.cc, lu.h, oct-fftw.cc, oct-fftw.h, oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randmtzig.cc, randmtzig.h, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h, action-container.h, base-list.h, caseless-str.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, data-conv.cc, file-info.h, glob-match.cc, glob-match.h, kpse.cc, kpse.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-regexp.h, oct-inttypes.cc, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sort.cc, oct-sort.h, oct-sparse.cc, octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc, singleton-cleanup.cc, singleton-cleanup.h, str-vec.cc, str-vec.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h, version.cc, version.in.h, cxx-signal-helpers.cc, acinclude.m4, main-cli.cc, main-gui.cc, main.in.cc, mkoctfile.in.cc, octave-build-info.h, octave-build-info.in.cc, octave-config.in.cc, octave-svgconvert.cc, shared-fcns.h: maint: Eliminate "(void)" in C++ function prototypes/declarations.
author Rik <rik@octave.org>
date Tue, 24 Jan 2023 17:19:44 -0800
parents 597f3ee61a48
children 2e484f9f1f18
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2003-2023 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // or <https://octave.org/copyright/>.
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7 //
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8 // Copyirght (C) 2009, 2010 VZLU Prague
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9 //
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10 // This file is part of Octave.
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11 //
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12 // Octave is free software: you can redistribute it and/or modify it
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13 // under the terms of the GNU General Public License as published by
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14 // the Free Software Foundation, either version 3 of the License, or
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15 // (at your option) any later version.
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16 //
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17 // Octave is distributed in the hope that it will be useful, but
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18 // WITHOUT ANY WARRANTY; without even the implied warranty of
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19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 // GNU General Public License for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License
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23 // along with Octave; see the file COPYING. If not, see
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24 // <https://www.gnu.org/licenses/>.
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25 //
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26 ////////////////////////////////////////////////////////////////////////
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27
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28 #if defined (HAVE_CONFIG_H)
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29 # include "config.h"
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30 #endif
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31
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32 #include <limits>
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33 #include <new>
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34 #include <sstream>
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35
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36 #include "Array.h"
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37 #include "dim-vector.h"
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38
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39 // The maximum allowed value for a dimension extent. This will normally be a
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40 // tiny bit off the maximum value of octave_idx_type.
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41 // Currently 1 is subtracted to allow safe conversion of any 2D Array into
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42 // Sparse, but this offset may change in the future.
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43 octave_idx_type
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44 dim_vector::dim_max ()
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45 {
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46 return std::numeric_limits<octave_idx_type>::max () - 1;
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47 }
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48
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49 void
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50 dim_vector::chop_all_singletons ()
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51 {
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52 int j = 0;
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53 int nd = ndims ();
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54
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55 for (int i = 0; i < nd; i++)
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56 {
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57 if (xelem(i) != 1)
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58 xelem(j++) = xelem(i);
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59 }
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61 if (j == 1)
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62 xelem(1) = 1;
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63
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64 m_num_dims = (j > 2 ? j : 2);
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65 }
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66
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67 std::string
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68 dim_vector::str (char sep) const
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69 {
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70 std::ostringstream buf;
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71
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72 for (int i = 0; i < ndims (); i++)
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73 {
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74 buf << xelem (i);
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75
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76 if (i < ndims () - 1)
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77 buf << sep;
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78 }
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79
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80 std::string retval = buf.str ();
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81
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82 return retval;
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83 }
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84
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85 int
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86 dim_vector::num_ones () const
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87 {
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88 int retval = 0;
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89
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90 for (int i = 0; i < ndims (); i++)
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91 if (xelem (i) == 1)
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92 retval++;
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93
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94 return retval;
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95 }
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96
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97 octave_idx_type
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98 dim_vector::safe_numel () const
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99 {
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31b95261c7d2 Backed out changeset 2890a931e647 (bug #47469)
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100 octave_idx_type idx_max = dim_max ();
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101 octave_idx_type n = 1;
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102 int n_dims = ndims ();
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103
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104 for (int i = 0; i < n_dims; i++)
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105 {
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106 n *= xelem(i);
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107 if (xelem(i) != 0)
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108 idx_max /= xelem(i);
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109 if (idx_max <= 0)
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110 throw std::bad_alloc ();
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111 }
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112
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113 return n;
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114 }
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115
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116 dim_vector
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117 dim_vector::squeeze () const
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118 {
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119 dim_vector new_dims = *this;
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120 new_dims.chop_all_singletons ();
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121
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122 // preserve orientation if there is only one non-singleton dimension left
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123 if (new_dims.ndims () == 2 && xelem(0) == 1 && new_dims.elem(1) == 1)
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124 return new_dims.as_row ();
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125
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126 return new_dims;
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127 }
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128
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129 // This is the rule for cat(). cat (dim, A, B) works if one
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130 // of the following holds, in this order:
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131 //
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132 // 1. size (A, k) == size (B, k) for all k != dim.
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133 // In this case, size (C, dim) = size (A, dim) + size (B, dim) and
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134 // other sizes remain intact.
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135 //
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136 // 2. A is 0x0, in which case B is the result
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137 // 3. B is 0x0, in which case A is the result
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138
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139 bool
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140 dim_vector::concat (const dim_vector& dvb, int dim)
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141 {
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142 int orig_nd = ndims ();
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143 int ndb = dvb.ndims ();
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855122b993da maint: Wrap tertiary operator in parentheses "(COND ? x : y)".
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144 int new_nd = (dim < ndb ? ndb : dim + 1);
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145 if (new_nd > orig_nd)
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146 resize (new_nd, 1);
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147 else
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148 new_nd = orig_nd;
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149
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150 bool match = true;
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151
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152 for (int i = 0; i < ndb; i++)
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153 {
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154 if (i != dim && xelem(i) != dvb(i))
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155 {
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156 match = false;
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157 break;
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158 }
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159 }
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160
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161 for (int i = ndb; i < new_nd; i++)
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162 {
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163 if (i != dim && xelem(i) != 1)
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164 {
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165 match = false;
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166 break;
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167 }
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168 }
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169
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170 if (match)
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171 xelem(dim) += (dim < ndb ? dvb(dim) : 1);
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172 else
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173 {
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diff changeset
174 // Dimensions don't match. The only allowed fix is to omit 0x0.
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175 if (ndb == 2 && dvb(0) == 0 && dvb(1) == 0)
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176 match = true;
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177 else if (orig_nd == 2 && xelem(0) == 0 && xelem(1) == 0)
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178 {
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179 *this = dvb;
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180 match = true;
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181 }
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182 }
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183
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184 chop_trailing_singletons ();
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185
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186 return match;
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187 }
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188
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189 // Rules for horzcat/vertcat are yet looser.
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190 // two arrays A, B can be concatenated
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191 // horizontally (dim = 2) or vertically (dim = 1) if one of the
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192 // following holds, in this order:
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193 //
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194 // 1. cat (dim, A, B) works
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195 //
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196 // 2. A, B are 2D and one of them is an empty vector, in which
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197 // case the result is the other one except if both of them
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198 // are empty vectors, in which case the result is 0x0.
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199
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200 bool
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201 dim_vector::hvcat (const dim_vector& dvb, int dim)
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202 {
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203 if (concat (dvb, dim))
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204 return true;
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205 else if (ndims () == 2 && dvb.ndims () == 2)
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206 {
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207 bool e2dv = xelem(0) + xelem(1) == 1;
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208 bool e2dvb = dvb(0) + dvb(1) == 1;
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209 if (e2dvb)
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210 {
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211 if (e2dv)
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212 *this = dim_vector ();
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213 return true;
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214 }
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215 else if (e2dv)
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216 {
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217 *this = dvb;
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218 return true;
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219 }
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220 }
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221
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222 return false;
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223 }
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224
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225 dim_vector
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226 dim_vector::redim (int n) const
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227 {
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228 int n_dims = ndims ();
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229
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230 if (n_dims == n)
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231 return *this;
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232 else if (n_dims < n)
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233 {
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234 dim_vector retval = alloc (n);
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235
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236 std::copy_n (m_dims, n_dims, retval.m_dims);
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237 std::fill_n (retval.m_dims + n_dims, n - n_dims, 1);
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238
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239 return retval;
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240 }
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241 else
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242 {
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243 if (n < 1)
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244 n = 1;
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245
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246 dim_vector retval = alloc (n);
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247
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248 std::copy_n (m_dims, n-1, retval.m_dims);
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249
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250 // Accumulate overflow dimensions into last remaining dimension
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251 int k = xelem(n-1);
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252 for (int i = n; i < n_dims; i++)
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253 k *= xelem(i);
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254
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255 retval.xelem(n-1) = k;
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256
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257 // All dim_vectors are at least 2-D. Make Nx1 if necessary.
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258 if (n == 1)
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259 retval.xelem(1) = 1;
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260
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261 return retval;
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262 }
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263 }
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264
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265 Array<octave_idx_type>
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266 dim_vector::as_array () const
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267 {
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268 octave_idx_type nd = ndims ();
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269
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270 Array<octave_idx_type> retval (dim_vector (1, nd));
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271
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272 for (octave_idx_type i = 0; i < nd; i++)
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273 retval(i) = elem (i);
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274
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275 return retval;
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276 }