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########################################################################
##
## Copyright (C) 2020-2024 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{new_expr} =} __vectorize__ (@var{expr})
## Undocumented internal function.
## @end deftypefn
## The following function was translated directly from the original C++
## version. Yes, it will be slow, but its use is strongly discouraged
## anyway, and most expressions will probably be short. It may also be
## buggy. Well, don't use this function!
function new_expr = __vectorize__ (expr)
new_expr = "";
len = length (expr);
i = 1;
while (i <= len)
c = expr(i);
if (c == "*" || c == "/" || c == "\\" || c == "^")
if (i > 1 && expr(i-1) != ".")
new_expr(end+1) = ".";
endif
## Special case for ** operator.
if (c == '*' && i < (len - 1) && expr(i+1) == '*')
new_expr(end+1) = "*";
i++;
endif
endif
new_expr(end+1) = c;
i++;
endwhile
endfunction
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