Mercurial > octave-nkf
view scripts/elfun/atan2d.m @ 20643:d6d04088ac9e
nbininv.m: Increase speed (85X) and accuracy of function (bug #34363).
* nbininv.m: Call new function scalar_nbininv to calculate nbininv for scalar.
If there are still uncalculated values then call bin_search_nbininv. Call
bin_search_nbininv directly for vectors. Add more BIST tests.
* nbininv.m (scalar_binoinv): New subfunction to calculate nbininv for scalar x.
Stops when x > 1000.
* nbininv.m (bin_search_nbininv): New subfunction to do binary search for nbininv.
author | Lachlan Andrew <lachlanbis@gmail.com> |
---|---|
date | Sun, 11 Oct 2015 20:33:37 -0700 |
parents | 4197fc428c7d |
children |
line wrap: on
line source
## Copyright (C) 2013-2015 Rik Wehbring ## ## 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} {} atan2d (@var{y}, @var{x}) ## Compute atan2 (@var{y} / @var{x}) in degrees for corresponding elements ## from @var{y} and @var{x}. ## @seealso{tand, atan2} ## @end deftypefn function retval = atan2d (y, x) if (nargin != 2) print_usage (); endif retval = 180 ./ pi .* atan2 (y, x); endfunction %!assert (atan2d (-1:.1:1, 1:-.1:-1), 180/pi * atan2 (-1:.1:1, 1:-.1:-1), -10*eps) %!error atan2d () %!error atan2d (1)