Mercurial > octave-nkf
view scripts/linear-algebra/isdiag.m @ 20198:075a5e2e1ba5 stable
doc: Update more docstrings to have one sentence summary as first line.
Reviewed build-aux, libinterp/dldfcn, libinterp/octave-value,
libinterp/parse-tree directories.
* build-aux/mk-opts.pl, libinterp/dldfcn/__magick_read__.cc,
libinterp/dldfcn/amd.cc, libinterp/dldfcn/audiodevinfo.cc,
libinterp/dldfcn/audioread.cc, libinterp/dldfcn/ccolamd.cc,
libinterp/dldfcn/chol.cc, libinterp/dldfcn/colamd.cc,
libinterp/dldfcn/convhulln.cc, libinterp/dldfcn/dmperm.cc,
libinterp/dldfcn/fftw.cc, libinterp/dldfcn/qr.cc, libinterp/dldfcn/symbfact.cc,
libinterp/dldfcn/symrcm.cc, libinterp/octave-value/ov-base.cc,
libinterp/octave-value/ov-bool-mat.cc, libinterp/octave-value/ov-cell.cc,
libinterp/octave-value/ov-class.cc, libinterp/octave-value/ov-fcn-handle.cc,
libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc,
libinterp/octave-value/ov-null-mat.cc, libinterp/octave-value/ov-oncleanup.cc,
libinterp/octave-value/ov-range.cc, libinterp/octave-value/ov-struct.cc,
libinterp/octave-value/ov-typeinfo.cc, libinterp/octave-value/ov-usr-fcn.cc,
libinterp/octave-value/ov.cc, libinterp/parse-tree/lex.ll,
libinterp/parse-tree/oct-parse.in.yy, libinterp/parse-tree/pt-binop.cc,
libinterp/parse-tree/pt-eval.cc, libinterp/parse-tree/pt-mat.cc:
doc: Update more docstrings to have one sentence summary as first line.
author | Rik <rik@octave.org> |
---|---|
date | Sun, 03 May 2015 21:52:42 -0700 |
parents | 9fc020886ae9 |
children |
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## Copyright (C) 2014-2015 Massimiliano Fasi ## ## 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 ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} isdiag (@var{A}) ## Return true if @var{A} is a diagonal matrix. ## @seealso{isbanded, istril, istriu, diag, bandwidth} ## @end deftypefn ## Author: Massimiliano Fasi function retval = isdiag (A) if (nargin != 1) print_usage (); endif retval = (isnumeric (A) || islogical (A)) && ndims (A) == 2; if (retval) [i, j] = find (A); retval = all (i == j); endif endfunction %!assert (! isdiag ("string")) %!assert (isdiag ([])) %!assert (isdiag (1)) %!assert (! isdiag ([1, 1])) %!assert (! isdiag ([1; 1])) %!assert (isdiag (eye (10))) %!assert (issymmetric ([i, 0; 0, 1 + i])) %!assert (isdiag (speye (1000000))) %!assert (isdiag (logical (eye (10)))) ## Test input validation %!error isdiag () %!error isdiag (1,2)