Mercurial > forge
view main/nnet/inst/isposint.m @ 11265:4d56b549b185 octave-forge
maint: update Michel D. Schmid e-mail
author | carandraug |
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date | Sat, 24 Nov 2012 22:16:49 +0000 |
parents | 73c74436563f |
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## Copyright (C) 2005 Michel D. Schmid <michael.schmid@plexso.com> ## ## This program 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. ## ## This program 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 ## this program; if not, see <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} @var{f} = isposint(@var{n}) ## @code{isposint} returns true for positive integer values. ## ## @example ## isposint(1) # this returns TRUE ## isposint(0.5) # this returns FALSE ## isposint(0) # this also return FALSE ## isposint(-1) # this also returns FALSE ## @end example ## ## ## @end deftypefn ## Author: Michel D. Schmid function f = isposint(n) ## check range of input arguments error(nargchk(1,1,nargin)) ## check input arg if (length(n)>1) error("Input argument must not be a vector, only scalars are allowed!") endif f = 1; if ( (!isreal(n)) || (n<=0) || (round(n) != n) ) f = 0; endif endfunction %!shared %! disp("testing isposint") %!assert(isposint(1)) # this should pass %!assert(isposint(0.5),0) # should return zero %!assert(isposint(-1),0) # should return zero %!assert(isposint(-1.5),0) # should return zero %!assert(isposint(0),0) # should return zero %!fail("isposint([0 0])","Input argument must not be a vector, only scalars are allowed!") %!fail("isposint('testString')","Input argument must not be a vector, only scalars are allowed!")