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## -*- texinfo -*-
## @deftypefn {} {} acot (@var{x})
## Compute the inverse cotangent in radians for each element of @var{x}.
## @seealso{cot, acotd}
## @end deftypefn

function y = acot (x)

  if (nargin != 1)
    print_usage ();
  endif

  y = atan (1 ./ x);

endfunction


%!test
%! rt2 = sqrt (2);
%! rt3 = sqrt (3);
%! x = [rt3, 1, rt3/3, 0, -rt3/3, -1, -rt3];
%! v = [pi/6, pi/4, pi/3, pi/2, -pi/3, -pi/4, -pi/6];
%! assert (acot (x), v, sqrt (eps));

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