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## -*- texinfo -*-
## @deftypefn {} {@var{y} =} secd (@var{x})
## Compute the secant for each element of @var{x} in degrees.
## @seealso{asecd, sec}
## @end deftypefn

function y = secd (x)

  if (nargin < 1)
    print_usage ();
  endif

  y = 1 ./ cosd (x);

endfunction


%!assert (secd (0:10:80), sec (pi*[0:10:80]/180), -10*eps)
%!assert (secd ([0, 180, 360]) != Inf)
%!assert (secd ([90, 270]) == Inf)

%!error <Invalid call> secd ()