## Copyright (C) 2006-2020 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this distribution
## or <https://octave.org/COPYRIGHT.html/>.
##
##
## 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.
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## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING.  If not, see
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## -*- texinfo -*-
## @deftypefn {} {} cscd (@var{x})
## Compute the cosecant for each element of @var{x} in degrees.
## @seealso{acscd, csc}
## @end deftypefn

## Author: David Bateman <dbateman@free.fr>

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 cscd ()
%!error cscd (1, 2)