########################################################################
##
## Copyright (C) 2019-2020 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.
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## 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 {} {} mustBeNumericOrLogical (@var{x})
##
## Requires that input @var{x} is numeric or logical.
##
## Raises an error if the input @var{x} is not numeric or logical, as
## determined by @code{isnumeric (@var{x}) || islogical (@var{x})}.
##
## @end deftypefn

function mustBeNumericOrLogical (x)
  if ! (isnumeric (x) || islogical (x))
    label = inputname (1);
    if isempty (label)
      label = "input";
    endif
    error ("%s must be numeric or logical; got a %s", label, class (x));
  endif
endfunction

%!test
%! mustBeNumericOrLogical ([])
%! mustBeNumericOrLogical (true)
%! mustBeNumericOrLogical (false)
%! mustBeNumericOrLogical (42)
%! mustBeNumericOrLogical (int32(42))

%!error mustBeNumericOrLogical ()
%!error mustBeNumericOrLogical ('foo')
%!error mustBeNumericOrLogical ({})
%!error mustBeNumericOrLogical (struct)