Mercurial > jwe > octave
view liboctave/operators/Sparse-diag-op-defs.h @ 31122:46e15523ca06
perms.m: Small cleanups for Octave coding conventions (bug #60364)
* perms.m: Wrap long lines in documentation to < 80 characters. Change
output in documentation example to match what Octave actually produces.
Use true/false for boolean variable "unique_v" rather than 0/1. Cuddle
parentheses when doing indexing and use a space when calling a function.
Add FIXME notes requesting an explanation of the apparently complicated
algorithm being used for permutations and unque permutations.
Remove period at end of error() message text per Octave conventions.
Change BIST input validation to more precisely check error() message.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 05 Jul 2022 08:57:15 -0700 |
parents | 796f54d4ddbf |
children |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2009-2022 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 (octave_Sparse_diag_op_defs_h) #define octave_Sparse_diag_op_defs_h 1 #include "octave-config.h" #include "lo-array-errwarn.h" // Matrix multiplication template <typename RT, typename DM, typename SM> RT do_mul_dm_sm (const DM& d, const SM& a) { const octave_idx_type nr = d.rows (); const octave_idx_type nc = d.cols (); const octave_idx_type a_nr = a.rows (); const octave_idx_type a_nc = a.cols (); if (nc != a_nr) octave::err_nonconformant ("operator *", nr, nc, a_nr, a_nc); RT r (nr, a_nc, a.nnz ()); octave_idx_type l = 0; for (octave_idx_type j = 0; j < a_nc; j++) { r.xcidx (j) = l; const octave_idx_type colend = a.cidx (j+1); for (octave_idx_type k = a.cidx (j); k < colend; k++) { const octave_idx_type i = a.ridx (k); if (i >= nr) break; r.xdata (l) = d.dgelem (i) * a.data (k); r.xridx (l) = i; l++; } } r.xcidx (a_nc) = l; r.maybe_compress (true); return r; } template <typename RT, typename SM, typename DM> RT do_mul_sm_dm (const SM& a, const DM& d) { const octave_idx_type nr = d.rows (); const octave_idx_type nc = d.cols (); const octave_idx_type a_nr = a.rows (); const octave_idx_type a_nc = a.cols (); if (nr != a_nc) octave::err_nonconformant ("operator *", a_nr, a_nc, nr, nc); const octave_idx_type mnc = (nc < a_nc ? nc: a_nc); RT r (a_nr, nc, a.cidx (mnc)); for (octave_idx_type j = 0; j < mnc; ++j) { const typename DM::element_type s = d.dgelem (j); const octave_idx_type colend = a.cidx (j+1); r.xcidx (j) = a.cidx (j); for (octave_idx_type k = a.cidx (j); k < colend; ++k) { r.xdata (k) = s * a.data (k); r.xridx (k) = a.ridx (k); } } for (octave_idx_type j = mnc; j <= nc; ++j) r.xcidx (j) = a.cidx (mnc); r.maybe_compress (true); return r; } // FIXME: functors such as this should be gathered somewhere template <typename T> struct identity_val { public: typedef T argument_type; typedef T result_type; T operator () (const T x) { return x; } }; // Matrix addition template <typename RT, typename SM, typename DM, typename OpA, typename OpD> RT inner_do_add_sm_dm (const SM& a, const DM& d, OpA opa, OpD opd) { using std::min; const octave_idx_type nr = d.rows (); const octave_idx_type nc = d.cols (); const octave_idx_type n = min (nr, nc); const octave_idx_type a_nr = a.rows (); const octave_idx_type a_nc = a.cols (); const octave_idx_type nz = a.nnz (); RT r (a_nr, a_nc, nz + n); octave_idx_type k = 0; for (octave_idx_type j = 0; j < nc; ++j) { octave_quit (); const octave_idx_type colend = a.cidx (j+1); r.xcidx (j) = k; octave_idx_type k_src = a.cidx (j), k_split; for (k_split = k_src; k_split < colend; k_split++) if (a.ridx (k_split) >= j) break; for (; k_src < k_split; k_src++, k++) { r.xridx (k) = a.ridx (k_src); r.xdata (k) = opa (a.data (k_src)); } if (k_src < colend && a.ridx (k_src) == j) { r.xridx (k) = j; r.xdata (k) = opa (a.data (k_src)) + opd (d.dgelem (j)); k++; k_src++; } else { r.xridx (k) = j; r.xdata (k) = opd (d.dgelem (j)); k++; } for (; k_src < colend; k_src++, k++) { r.xridx (k) = a.ridx (k_src); r.xdata (k) = opa (a.data (k_src)); } } r.xcidx (nc) = k; r.maybe_compress (true); return r; } template <typename RT, typename DM, typename SM> RT do_commutative_add_dm_sm (const DM& d, const SM& a) { // Extra function to ensure this is only emitted once. return inner_do_add_sm_dm<RT> (a, d, identity_val<typename SM::element_type> (), identity_val<typename DM::element_type> ()); } template <typename RT, typename DM, typename SM> RT do_add_dm_sm (const DM& d, const SM& a) { if (a.rows () != d.rows () || a.cols () != d.cols ()) octave::err_nonconformant ("operator +", d.rows (), d.cols (), a.rows (), a.cols ()); else return do_commutative_add_dm_sm<RT> (d, a); } template <typename RT, typename DM, typename SM> RT do_sub_dm_sm (const DM& d, const SM& a) { if (a.rows () != d.rows () || a.cols () != d.cols ()) octave::err_nonconformant ("operator -", d.rows (), d.cols (), a.rows (), a.cols ()); return inner_do_add_sm_dm<RT> (a, d, std::negate<typename SM::element_type> (), identity_val<typename DM::element_type> ()); } template <typename RT, typename SM, typename DM> RT do_add_sm_dm (const SM& a, const DM& d) { if (a.rows () != d.rows () || a.cols () != d.cols ()) octave::err_nonconformant ("operator +", a.rows (), a.cols (), d.rows (), d.cols ()); return do_commutative_add_dm_sm<RT> (d, a); } template <typename RT, typename SM, typename DM> RT do_sub_sm_dm (const SM& a, const DM& d) { if (a.rows () != d.rows () || a.cols () != d.cols ()) octave::err_nonconformant ("operator -", a.rows (), a.cols (), d.rows (), d.cols ()); return inner_do_add_sm_dm<RT> (a, d, identity_val<typename SM::element_type> (), std::negate<typename DM::element_type> ()); } #endif