Mercurial > octave
annotate liboctave/numeric/qrp.cc @ 21301:40de9f8f23a6
Use '#include "config.h"' rather than <config.h>.
* mk-octave-config-h.sh, mk-opts.pl, 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, ToolBarButton.cc, __init_qt__.cc,
annotation-dialog.cc, gl-select.cc, module.mk, kpty.cpp, 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,
file-editor-tab.cc, file-editor-tab.h, file-editor.cc, find-dialog.cc,
marker.cc, 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-features.sh, build-env.in.cc, Cell.cc, __contourc__.cc,
__dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __ilu__.cc, __lin_interpn__.cc,
__pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc, bitfcns.cc,
bsxfun.cc, c-file-ptr-stream.cc, cdisplay.c, 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, 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, hook-fcn.cc, input.cc, inv.cc, jit-ir.cc, jit-typeinfo.cc,
jit-util.cc, 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-utils.cc, lsode.cc, lu.cc, luinc.cc,
mappers.cc, matrix_type.cc, max.cc, mex.cc, mgorth.cc, nproc.cc,
oct-errno.in.cc, oct-fstrm.cc, oct-hdf5-types.cc, oct-hist.cc, oct-iostrm.cc,
oct-lvalue.cc, oct-map.cc, oct-prcstrm.cc, oct-procbuf.cc, 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, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc,
schur.cc, sighandlers.cc, siglist.c, 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,
__delaunayn__.cc, __eigs__.cc, __fltk_uigetfile__.cc, __glpk__.cc,
__init_fltk__.cc, __init_gnuplot__.cc, __magick_read__.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,
mkbuiltins, mkops, ov-base-diag.cc, ov-base-int.cc, ov-base-mat.cc,
ov-base-scalar.cc, ov-base-sparse.cc, 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.cc, ovl.cc, octave.cc, 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-cell.cc,
op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.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-dm.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-fdm.cc, op-fcm-fcm.cc, op-fcm-fcs.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-fdm.cc, op-float-conv.cc, op-fm-fcm.cc, op-fm-fcs.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-cm.cc, op-m-cs.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-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-os.cc, Array-sym.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, DiagArray2.cc, MArray-C.cc,
MArray-d.cc, MArray-f.cc, MArray-fC.cc, MArray-i.cc, MArray-s.cc, MArray.cc,
MDiagArray2.cc, MSparse-C.cc, MSparse-d.cc, MatrixType.cc, PermMatrix.cc,
Range.cc, Sparse-C.cc, Sparse-b.cc, Sparse-d.cc, Sparse.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, 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, intNDArray.cc, uint16NDArray.cc,
uint32NDArray.cc, uint64NDArray.cc, uint8NDArray.cc, blaswrap.c, cquit.c,
f77-extern.cc, f77-fcn.c, lo-error.c, quit.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, randgamma.c, randmtzig.c, randpoisson.c, schur.cc,
sparse-chol.cc, sparse-dmsolve.cc, sparse-lu.cc, sparse-qr.cc, svd.cc,
mk-ops.awk, 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, 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-ieee.cc, lo-regexp.cc, lo-utils.cc, oct-base64.cc, oct-glob.cc,
oct-inttypes.cc, oct-locbuf.cc, oct-mutex.cc, oct-rl-edit.c, oct-rl-hist.c,
oct-shlib.cc, oct-sort.cc, pathsearch.cc, singleton-cleanup.cc, sparse-sort.cc,
sparse-util.cc, str-vec.cc, unwind-prot.cc, url-transfer.cc,
display-available.c, main-cli.cc, main-gui.cc, main.in.cc, mkoctfile.in.cc,
octave-config.in.cc:
Use '#include "config.h"' rather than <config.h>.
author | Rik <rik@octave.org> |
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date | Thu, 18 Feb 2016 13:34:50 -0800 |
parents | ebdf74c15722 |
children | aba2e6293dd8 |
rev | line source |
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538 | 1 /* |
2 | |
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3 Copyright (C) 1994-2015 John W. Eatonn |
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4 Copyright (C) 2009 VZLU Prague |
538 | 5 |
6 This file is part of Octave. | |
7 | |
8 Octave is free software; you can redistribute it and/or modify it | |
9 under the terms of the GNU General Public License as published by the | |
7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
11 option) any later version. | |
538 | 12 |
13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
20 <http://www.gnu.org/licenses/>. | |
538 | 21 |
22 */ | |
23 | |
24 #ifdef HAVE_CONFIG_H | |
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25 # include "config.h" |
538 | 26 #endif |
27 | |
1367 | 28 #include <cassert> |
538 | 29 |
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30 #include "CMatrix.h" |
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31 #include "dMatrix.h" |
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32 #include "dRowVector.h" |
1847 | 33 #include "f77-fcn.h" |
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34 #include "fCMatrix.h" |
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35 #include "fMatrix.h" |
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36 #include "fRowVector.h" |
538 | 37 #include "lo-error.h" |
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38 #include "oct-locbuf.h" |
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39 #include "qrp.h" |
538 | 40 |
41 extern "C" | |
42 { | |
4552 | 43 F77_RET_T |
11518 | 44 F77_FUNC (dgeqp3, DGEQP3) (const octave_idx_type&, const octave_idx_type&, |
45 double*, const octave_idx_type&, | |
46 octave_idx_type*, double*, double*, | |
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47 const octave_idx_type&, octave_idx_type&); |
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48 |
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49 F77_RET_T |
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50 F77_FUNC (sgeqp3, SGEQP3) (const octave_idx_type&, const octave_idx_type&, |
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51 float*, const octave_idx_type&, octave_idx_type*, |
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52 float*, float*, const octave_idx_type&, |
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53 octave_idx_type&); |
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54 F77_RET_T |
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55 F77_FUNC (zgeqp3, ZGEQP3) (const octave_idx_type&, const octave_idx_type&, |
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56 Complex*, const octave_idx_type&, |
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57 octave_idx_type*, Complex*, Complex*, |
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58 const octave_idx_type&, double*, |
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59 octave_idx_type&); |
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60 F77_RET_T |
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61 F77_FUNC (cgeqp3, CGEQP3) (const octave_idx_type&, const octave_idx_type&, |
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62 FloatComplex*, const octave_idx_type&, |
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63 octave_idx_type*, FloatComplex*, FloatComplex*, |
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64 const octave_idx_type&, float*, octave_idx_type&); |
538 | 65 } |
66 | |
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67 // Specialization. |
538 | 68 |
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69 template <> |
2763 | 70 void |
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71 qrp<Matrix>::init (const Matrix& a, type qr_type) |
538 | 72 { |
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73 assert (qr_type != qr<Matrix>::raw); |
538 | 74 |
5275 | 75 octave_idx_type m = a.rows (); |
76 octave_idx_type n = a.cols (); | |
538 | 77 |
5275 | 78 octave_idx_type min_mn = m < n ? m : n; |
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79 OCTAVE_LOCAL_BUFFER (double, tau, min_mn); |
1922 | 80 |
5275 | 81 octave_idx_type info = 0; |
538 | 82 |
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83 Matrix afact = a; |
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84 if (m > n && qr_type == qr<Matrix>::std) |
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85 afact.resize (m, m); |
538 | 86 |
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87 MArray<octave_idx_type> jpvt (dim_vector (n, 1), 0); |
538 | 88 |
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89 if (m > 0) |
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90 { |
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91 // workspace query. |
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92 double rlwork; |
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93 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), |
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94 m, jpvt.fortran_vec (), tau, |
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95 &rlwork, -1, info)); |
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96 |
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97 // allocate buffer and do the job. |
8811 | 98 octave_idx_type lwork = rlwork; |
99 lwork = std::max (lwork, static_cast<octave_idx_type> (1)); | |
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100 OCTAVE_LOCAL_BUFFER (double, work, lwork); |
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101 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), |
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102 m, jpvt.fortran_vec (), tau, |
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103 work, lwork, info)); |
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104 } |
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105 else |
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106 for (octave_idx_type i = 0; i < n; i++) jpvt(i) = i+1; |
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108 // Form Permutation matrix (if economy is requested, return the |
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109 // indices only!) |
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112 p = PermMatrix (jpvt, true); |
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114 | |
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115 form (n, afact, tau, qr_type); |
538 | 116 } |
117 | |
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118 template <> |
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119 qrp<Matrix>::qrp (const Matrix& a, type qr_type) |
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120 : qr<Matrix> (), p () |
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121 { |
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122 init (a, qr_type); |
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123 } |
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124 |
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125 template <> |
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126 RowVector |
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127 qrp<Matrix>::Pvec (void) const |
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128 { |
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129 Array<double> pa (p.col_perm_vec ()); |
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130 RowVector pv (MArray<double> (pa) + 1.0); |
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131 return pv; |
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132 } |
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133 |
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134 template <> |
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135 void |
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136 qrp<FloatMatrix>::init (const FloatMatrix& a, type qr_type) |
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137 { |
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138 assert (qr_type != qr<FloatMatrix>::raw); |
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139 |
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140 octave_idx_type m = a.rows (); |
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141 octave_idx_type n = a.cols (); |
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142 |
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143 octave_idx_type min_mn = m < n ? m : n; |
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144 OCTAVE_LOCAL_BUFFER (float, tau, min_mn); |
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145 |
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146 octave_idx_type info = 0; |
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147 |
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148 FloatMatrix afact = a; |
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149 if (m > n && qr_type == qr<FloatMatrix>::std) |
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150 afact.resize (m, m); |
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151 |
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152 MArray<octave_idx_type> jpvt (dim_vector (n, 1), 0); |
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153 |
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154 if (m > 0) |
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155 { |
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156 // workspace query. |
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157 float rlwork; |
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158 F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (), |
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159 m, jpvt.fortran_vec (), tau, |
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160 &rlwork, -1, info)); |
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161 |
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162 // allocate buffer and do the job. |
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163 octave_idx_type lwork = rlwork; |
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164 lwork = std::max (lwork, static_cast<octave_idx_type> (1)); |
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165 OCTAVE_LOCAL_BUFFER (float, work, lwork); |
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166 F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (), |
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167 m, jpvt.fortran_vec (), tau, |
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168 work, lwork, info)); |
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169 } |
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170 else |
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171 for (octave_idx_type i = 0; i < n; i++) jpvt(i) = i+1; |
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172 |
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173 // Form Permutation matrix (if economy is requested, return the |
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174 // indices only!) |
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175 |
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176 jpvt -= static_cast<octave_idx_type> (1); |
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177 p = PermMatrix (jpvt, true); |
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178 |
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179 |
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180 form (n, afact, tau, qr_type); |
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181 } |
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182 |
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183 template <> |
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184 qrp<FloatMatrix>::qrp (const FloatMatrix& a, type qr_type) |
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185 : qr<FloatMatrix> (), p () |
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186 { |
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187 init (a, qr_type); |
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188 } |
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189 |
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190 template <> |
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191 FloatRowVector |
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192 qrp<FloatMatrix>::Pvec (void) const |
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193 { |
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194 Array<float> pa (p.col_perm_vec ()); |
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195 FloatRowVector pv (MArray<float> (pa) + 1.0f); |
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196 return pv; |
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197 } |
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198 |
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199 template <> |
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200 void |
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201 qrp<ComplexMatrix>::init (const ComplexMatrix& a, type qr_type) |
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202 { |
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203 assert (qr_type != qr<ComplexMatrix>::raw); |
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204 |
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205 octave_idx_type m = a.rows (); |
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206 octave_idx_type n = a.cols (); |
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207 |
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208 octave_idx_type min_mn = m < n ? m : n; |
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209 OCTAVE_LOCAL_BUFFER (Complex, tau, min_mn); |
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210 |
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211 octave_idx_type info = 0; |
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212 |
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213 ComplexMatrix afact = a; |
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214 if (m > n && qr_type == qr<ComplexMatrix>::std) |
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215 afact.resize (m, m); |
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216 |
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217 MArray<octave_idx_type> jpvt (dim_vector (n, 1), 0); |
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218 |
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219 if (m > 0) |
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220 { |
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221 OCTAVE_LOCAL_BUFFER (double, rwork, 2*n); |
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222 |
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223 // workspace query. |
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224 Complex clwork; |
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225 F77_XFCN (zgeqp3, ZGEQP3, (m, n, afact.fortran_vec (), |
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226 m, jpvt.fortran_vec (), tau, |
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227 &clwork, -1, rwork, info)); |
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228 |
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229 // allocate buffer and do the job. |
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230 octave_idx_type lwork = clwork.real (); |
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231 lwork = std::max (lwork, static_cast<octave_idx_type> (1)); |
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232 OCTAVE_LOCAL_BUFFER (Complex, work, lwork); |
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233 F77_XFCN (zgeqp3, ZGEQP3, (m, n, afact.fortran_vec (), |
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234 m, jpvt.fortran_vec (), tau, |
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235 work, lwork, rwork, info)); |
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236 } |
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237 else |
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238 for (octave_idx_type i = 0; i < n; i++) jpvt(i) = i+1; |
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239 |
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240 // Form Permutation matrix (if economy is requested, return the |
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241 // indices only!) |
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242 |
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243 jpvt -= static_cast<octave_idx_type> (1); |
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244 p = PermMatrix (jpvt, true); |
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245 |
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246 |
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247 form (n, afact, tau, qr_type); |
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248 } |
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249 |
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250 template <> |
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251 qrp<ComplexMatrix>::qrp (const ComplexMatrix& a, type qr_type) |
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252 : qr<ComplexMatrix> (), p () |
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253 { |
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254 init (a, qr_type); |
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255 } |
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256 |
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257 template <> |
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258 RowVector |
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259 qrp<ComplexMatrix>::Pvec (void) const |
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260 { |
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261 Array<double> pa (p.col_perm_vec ()); |
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262 RowVector pv (MArray<double> (pa) + 1.0); |
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263 return pv; |
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264 } |
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265 |
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266 template <> |
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267 void |
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268 qrp<FloatComplexMatrix>::init (const FloatComplexMatrix& a, type qr_type) |
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269 { |
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270 assert (qr_type != qr<FloatComplexMatrix>::raw); |
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271 |
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272 octave_idx_type m = a.rows (); |
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273 octave_idx_type n = a.cols (); |
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274 |
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275 octave_idx_type min_mn = m < n ? m : n; |
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276 OCTAVE_LOCAL_BUFFER (FloatComplex, tau, min_mn); |
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277 |
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278 octave_idx_type info = 0; |
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279 |
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280 FloatComplexMatrix afact = a; |
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281 if (m > n && qr_type == qr<FloatComplexMatrix>::std) |
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282 afact.resize (m, m); |
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283 |
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284 MArray<octave_idx_type> jpvt (dim_vector (n, 1), 0); |
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285 |
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286 if (m > 0) |
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287 { |
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288 OCTAVE_LOCAL_BUFFER (float, rwork, 2*n); |
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289 |
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290 // workspace query. |
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291 FloatComplex clwork; |
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292 F77_XFCN (cgeqp3, CGEQP3, (m, n, afact.fortran_vec (), |
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293 m, jpvt.fortran_vec (), tau, |
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294 &clwork, -1, rwork, info)); |
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295 |
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296 // allocate buffer and do the job. |
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297 octave_idx_type lwork = clwork.real (); |
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298 lwork = std::max (lwork, static_cast<octave_idx_type> (1)); |
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299 OCTAVE_LOCAL_BUFFER (FloatComplex, work, lwork); |
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300 F77_XFCN (cgeqp3, CGEQP3, (m, n, afact.fortran_vec (), |
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301 m, jpvt.fortran_vec (), tau, |
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302 work, lwork, rwork, info)); |
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303 } |
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304 else |
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305 for (octave_idx_type i = 0; i < n; i++) jpvt(i) = i+1; |
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306 |
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307 // Form Permutation matrix (if economy is requested, return the |
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308 // indices only!) |
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309 |
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310 jpvt -= static_cast<octave_idx_type> (1); |
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311 p = PermMatrix (jpvt, true); |
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312 |
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313 |
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314 form (n, afact, tau, qr_type); |
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315 } |
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316 |
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317 template <> |
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318 qrp<FloatComplexMatrix>::qrp (const FloatComplexMatrix& a, type qr_type) |
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319 : qr<FloatComplexMatrix> (), p () |
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320 { |
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321 init (a, qr_type); |
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322 } |
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323 |
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324 template <> |
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325 FloatRowVector |
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326 qrp<FloatComplexMatrix>::Pvec (void) const |
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327 { |
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328 Array<float> pa (p.col_perm_vec ()); |
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329 FloatRowVector pv (MArray<float> (pa) + 1.0f); |
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330 return pv; |
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331 } |