Mercurial > hg > octave-nkf
annotate scripts/sparse/spconvert.m @ 9665:1dba57e9d08d
use blas_trans_type for xgemm
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Sat, 26 Sep 2009 10:41:07 +0200 |
| parents | 16f53d29049f |
| children | 95c3e38098bf |
| rev | line source |
|---|---|
| 9245 | 1 ## Copyright (C) 2004, 2005, 2007, 2009 David Bateman and Andy Adler |
| 5164 | 2 ## |
| 7016 | 3 ## This file is part of Octave. |
| 5164 | 4 ## |
| 7016 | 5 ## Octave is free software; you can redistribute it and/or modify it |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 5164 | 14 ## |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 5164 | 18 |
| 19 ## -*- texinfo -*- | |
| 20 ## @deftypefn {Function File} {@var{x} =} spconvert (@var{m}) | |
| 21 ## This function converts for a simple sparse matrix format easily | |
|
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
7017
diff
changeset
|
22 ## produced by other programs into Octave's internal sparse format. The |
| 5164 | 23 ## input @var{x} is either a 3 or 4 column real matrix, containing |
| 24 ## the row, column, real and imaginary parts of the elements of the | |
|
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
7017
diff
changeset
|
25 ## sparse matrix. An element with a zero real and imaginary part can |
| 5164 | 26 ## be used to force a particular matrix size. |
| 27 ## @end deftypefn | |
| 28 | |
| 29 function s = spconvert (m) | |
| 30 | |
| 6498 | 31 if (issparse (m)) |
| 5164 | 32 s = m; |
| 33 else | |
| 6498 | 34 sz = size (m); |
| 35 if (nargin != 1 || ! ismatrix (m) || ! isreal (m) | |
| 36 || length (sz) != 2 || (sz(2) != 3 && sz(2) != 4)) | |
| 37 error ("spconvert: argument must be sparse or real matrix with 3 or 4 columns"); | |
| 5164 | 38 elseif (sz(2) == 3) |
| 39 s = sparse (m(:,1), m(:,2), m(:,3)); | |
| 40 else | |
| 41 s = sparse (m(:,1), m(:,2), m(:,3) + 1i*m(:,4)); | |
| 42 endif | |
| 43 endif | |
| 6498 | 44 |
| 5164 | 45 endfunction |