Mercurial > octave
view liboctave/numeric/qrp.cc @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | abf2e77cca42 |
children | e88a07dec498 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1994-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <cassert> #include <algorithm> #include "Array.h" #include "CMatrix.h" #include "MArray.h" #include "dMatrix.h" #include "dRowVector.h" #include "fCMatrix.h" #include "fMatrix.h" #include "fRowVector.h" #include "lo-lapack-proto.h" #include "oct-locbuf.h" #include "qrp.h" namespace octave { namespace math { // Specialization. template <> OCTAVE_API void qrp<Matrix>::init (const Matrix& a, type qr_type) { assert (qr_type != qr<Matrix>::raw); F77_INT m = to_f77_int (a.rows ()); F77_INT n = to_f77_int (a.cols ()); F77_INT min_mn = (m < n ? m : n); OCTAVE_LOCAL_BUFFER (double, tau, min_mn); F77_INT info = 0; Matrix afact = a; if (m > n && qr_type == qr<Matrix>::std) afact.resize (m, m); MArray<F77_INT> jpvt (dim_vector (n, 1), 0); if (m > 0) { // workspace query. double rlwork; F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), m, jpvt.fortran_vec (), tau, &rlwork, -1, info)); // allocate buffer and do the job. F77_INT lwork = static_cast<F77_INT> (rlwork); lwork = std::max (lwork, static_cast<F77_INT> (1)); OCTAVE_LOCAL_BUFFER (double, work, lwork); F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), m, jpvt.fortran_vec (), tau, work, lwork, info)); } else { for (F77_INT i = 0; i < n; i++) jpvt(i) = i+1; } // Form Permutation matrix (if economy is requested, return the // indices only!) jpvt -= static_cast<F77_INT> (1); m_p = PermMatrix (jpvt, true); form (n, afact, tau, qr_type); } template <> OCTAVE_API qrp<Matrix>::qrp (const Matrix& a, type qr_type) : qr<Matrix> (), m_p () { init (a, qr_type); } template <> OCTAVE_API RowVector qrp<Matrix>::Pvec (void) const { Array<double> pa (m_p.col_perm_vec ()); RowVector pv (MArray<double> (pa) + 1.0); return pv; } template <> OCTAVE_API void qrp<FloatMatrix>::init (const FloatMatrix& a, type qr_type) { assert (qr_type != qr<FloatMatrix>::raw); F77_INT m = to_f77_int (a.rows ()); F77_INT n = to_f77_int (a.cols ()); F77_INT min_mn = (m < n ? m : n); OCTAVE_LOCAL_BUFFER (float, tau, min_mn); F77_INT info = 0; FloatMatrix afact = a; if (m > n && qr_type == qr<FloatMatrix>::std) afact.resize (m, m); MArray<F77_INT> jpvt (dim_vector (n, 1), 0); if (m > 0) { // workspace query. float rlwork; F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (), m, jpvt.fortran_vec (), tau, &rlwork, -1, info)); // allocate buffer and do the job. F77_INT lwork = static_cast<F77_INT> (rlwork); lwork = std::max (lwork, static_cast<F77_INT> (1)); OCTAVE_LOCAL_BUFFER (float, work, lwork); F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (), m, jpvt.fortran_vec (), tau, work, lwork, info)); } else { for (F77_INT i = 0; i < n; i++) jpvt(i) = i+1; } // Form Permutation matrix (if economy is requested, return the // indices only!) jpvt -= static_cast<F77_INT> (1); m_p = PermMatrix (jpvt, true); form (n, afact, tau, qr_type); } template <> OCTAVE_API qrp<FloatMatrix>::qrp (const FloatMatrix& a, type qr_type) : qr<FloatMatrix> (), m_p () { init (a, qr_type); } template <> OCTAVE_API FloatRowVector qrp<FloatMatrix>::Pvec (void) const { Array<float> pa (m_p.col_perm_vec ()); FloatRowVector pv (MArray<float> (pa) + 1.0f); return pv; } template <> OCTAVE_API void qrp<ComplexMatrix>::init (const ComplexMatrix& a, type qr_type) { assert (qr_type != qr<ComplexMatrix>::raw); F77_INT m = to_f77_int (a.rows ()); F77_INT n = to_f77_int (a.cols ()); F77_INT min_mn = (m < n ? m : n); OCTAVE_LOCAL_BUFFER (Complex, tau, min_mn); F77_INT info = 0; ComplexMatrix afact = a; if (m > n && qr_type == qr<ComplexMatrix>::std) afact.resize (m, m); MArray<F77_INT> jpvt (dim_vector (n, 1), 0); if (m > 0) { OCTAVE_LOCAL_BUFFER (double, rwork, 2*n); // workspace query. Complex clwork; F77_XFCN (zgeqp3, ZGEQP3, (m, n, F77_DBLE_CMPLX_ARG (afact.fortran_vec ()), m, jpvt.fortran_vec (), F77_DBLE_CMPLX_ARG (tau), F77_DBLE_CMPLX_ARG (&clwork), -1, rwork, info)); // allocate buffer and do the job. F77_INT lwork = static_cast<F77_INT> (clwork.real ()); lwork = std::max (lwork, static_cast<F77_INT> (1)); OCTAVE_LOCAL_BUFFER (Complex, work, lwork); F77_XFCN (zgeqp3, ZGEQP3, (m, n, F77_DBLE_CMPLX_ARG (afact.fortran_vec ()), m, jpvt.fortran_vec (), F77_DBLE_CMPLX_ARG (tau), F77_DBLE_CMPLX_ARG (work), lwork, rwork, info)); } else { for (F77_INT i = 0; i < n; i++) jpvt(i) = i+1; } // Form Permutation matrix (if economy is requested, return the // indices only!) jpvt -= static_cast<F77_INT> (1); m_p = PermMatrix (jpvt, true); form (n, afact, tau, qr_type); } template <> OCTAVE_API qrp<ComplexMatrix>::qrp (const ComplexMatrix& a, type qr_type) : qr<ComplexMatrix> (), m_p () { init (a, qr_type); } template <> OCTAVE_API RowVector qrp<ComplexMatrix>::Pvec (void) const { Array<double> pa (m_p.col_perm_vec ()); RowVector pv (MArray<double> (pa) + 1.0); return pv; } template <> OCTAVE_API void qrp<FloatComplexMatrix>::init (const FloatComplexMatrix& a, type qr_type) { assert (qr_type != qr<FloatComplexMatrix>::raw); F77_INT m = to_f77_int (a.rows ()); F77_INT n = to_f77_int (a.cols ()); F77_INT min_mn = (m < n ? m : n); OCTAVE_LOCAL_BUFFER (FloatComplex, tau, min_mn); F77_INT info = 0; FloatComplexMatrix afact = a; if (m > n && qr_type == qr<FloatComplexMatrix>::std) afact.resize (m, m); MArray<F77_INT> jpvt (dim_vector (n, 1), 0); if (m > 0) { OCTAVE_LOCAL_BUFFER (float, rwork, 2*n); // workspace query. FloatComplex clwork; F77_XFCN (cgeqp3, CGEQP3, (m, n, F77_CMPLX_ARG (afact.fortran_vec ()), m, jpvt.fortran_vec (), F77_CMPLX_ARG (tau), F77_CMPLX_ARG (&clwork), -1, rwork, info)); // allocate buffer and do the job. F77_INT lwork = static_cast<F77_INT> (clwork.real ()); lwork = std::max (lwork, static_cast<F77_INT> (1)); OCTAVE_LOCAL_BUFFER (FloatComplex, work, lwork); F77_XFCN (cgeqp3, CGEQP3, (m, n, F77_CMPLX_ARG (afact.fortran_vec ()), m, jpvt.fortran_vec (), F77_CMPLX_ARG (tau), F77_CMPLX_ARG (work), lwork, rwork, info)); } else { for (F77_INT i = 0; i < n; i++) jpvt(i) = i+1; } // Form Permutation matrix (if economy is requested, return the // indices only!) jpvt -= static_cast<F77_INT> (1); m_p = PermMatrix (jpvt, true); form (n, afact, tau, qr_type); } template <> OCTAVE_API qrp<FloatComplexMatrix>::qrp (const FloatComplexMatrix& a, type qr_type) : qr<FloatComplexMatrix> (), m_p () { init (a, qr_type); } template <> OCTAVE_API FloatRowVector qrp<FloatComplexMatrix>::Pvec (void) const { Array<float> pa (m_p.col_perm_vec ()); FloatRowVector pv (MArray<float> (pa) + 1.0f); return pv; } } }