view scripts/elfun/cscd.m @ 33567:9f0f7a898b73 bytecode-interpreter tip

maint: Merge default to bytecode-interpreter
author Arun Giridhar <arungiridhar@gmail.com>
date Fri, 10 May 2024 17:57:29 -0400
parents 2e484f9f1f18
children
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########################################################################
##
## Copyright (C) 2006-2024 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## 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
## <https://www.gnu.org/licenses/>.
##
########################################################################

## -*- texinfo -*-
## @deftypefn {} {@var{y} =} cscd (@var{x})
## Compute the cosecant for each element of @var{x} in degrees.
## @seealso{acscd, csc}
## @end deftypefn

function y = cscd (x)

  if (nargin < 1)
    print_usage ();
  endif

  y = 1 ./ sind (x);

endfunction


%!assert (cscd (10:10:90), csc (pi*[10:10:90]/180), -10*eps)
%!assert (cscd ([0, 180, 360]) == Inf)
%!assert (cscd ([90, 270]) != Inf)

%!error <Invalid call> cscd ()