Mercurial > octave-antonio
view scripts/time/etime.m @ 19833:9fc020886ae9
maint: Clean up m-files to follow Octave coding conventions.
Try to trim long lines to < 80 chars.
Use '##' for single line comments.
Use '(...)' around tests for if/elseif/switch/while.
Abut cell indexing operator '{' next to variable.
Abut array indexing operator '(' next to variable.
Use space between negation operator '!' and following expression.
Use two newlines between endfunction and start of %!test or %!demo code.
Remove unnecessary parens grouping between short-circuit operators.
Remove stray extra spaces (typos) between variables and assignment operators.
Remove stray extra spaces from ends of lines.
author | Rik <rik@octave.org> |
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date | Mon, 23 Feb 2015 14:54:39 -0800 |
parents | 4197fc428c7d |
children | 2645f9ef8c88 |
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## Copyright (C) 1996-2015 John W. Eaton ## ## 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} {} etime (@var{t2}, @var{t1}) ## Return the difference in seconds between two time values returned from ## @code{clock} (@math{@var{t2} - @var{t1}}). For example: ## ## @example ## @group ## t0 = clock (); ## # many computations later@dots{} ## elapsed_time = etime (clock (), t0); ## @end group ## @end example ## ## @noindent ## will set the variable @code{elapsed_time} to the number of seconds since ## the variable @code{t0} was set. ## @seealso{tic, toc, clock, cputime, addtodate} ## @end deftypefn ## Author: jwe function secs = etime (t2, t1) if (nargin != 2) print_usage (); endif [~, s2] = datenum (t2); [~, s1] = datenum (t1); secs = s2 - s1; endfunction %!assert (etime ([1900,12,31,23,59,59], [1901,1,1,0,0,0]), -1) %!assert (etime ([1900,2,28,23,59,59], [1900,3,1,0,0,0]), -1) %!assert (etime ([2000,2,28,23,59,59], [2000,3,1,0,0,0]), -86401) %!assert (etime ([1996,2,28,23,59,59], [1996,3,1,0,0,0]), -86401) %!test %! t1 = [1900,12,31,23,59,59; 1900,2,28,23,59,59]; %! t2 = [1901,1,1,0,0,0; 1900,3,1,0,0,0]; %! assert (etime (t2, t1), [1;1]); %!test %! t1 = [1993, 8, 20, 4, 56, 1]; %! t2 = [1993, 8, 21, 4, 56, 1]; %! t3 = [1993, 8, 20, 5, 56, 1]; %! t4 = [1993, 8, 20, 4, 57, 1]; %! t5 = [1993, 8, 20, 4, 56, 14]; %! %! assert (etime (t2, t1), 86400); %! assert (etime (t3, t1), 3600); %! assert (etime (t4, t1), 60); %! assert (etime (t5, t1), 13); ## Test input validation %!error etime (); %!error etime (1); %!error etime (1, 2, 3);