Mercurial > octave
view liboctave/external/blas-xtra/zdconv2.f @ 31706:597f3ee61a48 stable
update Octave Project Developers copyright for the new year
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 06 Jan 2023 13:11:27 -0500 |
parents | 796f54d4ddbf |
children | 2e484f9f1f18 |
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c Copyright (C) 2010-2023 The Octave Project Developers c c See the file COPYRIGHT.md in the top-level directory of this c distribution or <https://octave.org/copyright/>. c c This file is part of Octave. c c Octave is free software: you can redistribute it and/or modify it c under the terms of the GNU General Public License as published by c the Free Software Foundation, either version 3 of the License, or c (at your option) any later version. c c Octave is distributed in the hope that it will be useful, but c WITHOUT ANY WARRANTY; without even the implied warranty of c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the c GNU General Public License for more details. c c You should have received a copy of the GNU General Public License c along with Octave; see the file COPYING. If not, see c <https://www.gnu.org/licenses/>. c subroutine zdconv2o(ma,na,a,mb,nb,b,c) c purpose: a 2-dimensional outer additive convolution. c equivalent to the following: c for i = 1:ma c for j = 1:na c c(i:i+mb-1,j:j+mb-1) += a(i,j)*b c endfor c endfor c arguments: c ma,na (in) dimensions of a c a (in) 1st matrix c mb,nb (in) dimensions of b c b (in) 2nd matrix c c (inout) accumulator matrix, size (ma+mb-1, na+nb-1) c integer ma,na,mb,nb double complex a(ma,na) double precision b(mb,nb) double complex c(ma+mb-1,na+nb-1) double complex btmp integer i,j,k external zaxpy do k = 1,na do j = 1,nb do i = 1,mb btmp = b(i,j) call zaxpy(ma,btmp,a(1,k),1,c(i,j+k-1),1) end do end do end do end subroutine subroutine zdconv2i(ma,na,a,mb,nb,b,c) c purpose: a 2-dimensional inner additive convolution. c equivalent to the following: c for i = 1:ma-mb+1 c for j = 1:na-nb+1 c c(i,j) = sum (sum (a(i:i+mb-1,j:j+nb-1) .* b)) c endfor c endfor c arguments: c ma,na (in) dimensions of a c a (in) 1st matrix c mb,nb (in) dimensions of b c b (in) 2nd matrix c c (inout) accumulator matrix, size (ma+mb-1, na+nb-1) c integer ma,na,mb,nb double complex a(ma,na) double precision b(mb,nb) double complex c(ma-mb+1,na-nb+1) double complex btmp integer i,j,k external zaxpy do k = 1,na-nb+1 do j = 1,nb do i = 1,mb btmp = b(i,j) call zaxpy(ma-mb+1,btmp,a(mb+1-i,k+nb-j),1,c(1,k),1) end do end do end do end subroutine