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strcmp.m
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1996-09-28
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# Copyright (C) 1993, 1994, 1995 John W. Eaton
#
# 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 2, 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, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
function status = strcmp (s1, s2)
# usage: strcmp (s1, s2)
#
# Compare two strings.
#
# WARNING: Unlike the C function of the same name, this function
# returns 1 for equal and zero for not equal. Why? To be compatible
# with Matlab, of course.
if (nargin != 2)
usage ("strcmp (s, t)");
endif
status = 0;
if (isstr (s1) && isstr(s2))
len_s1 = columns (s1);
len_s2 = columns (s2);
if (len_s1 == len_s2)
if (len_s1 == 0)
status = 1;
else
tmp = implicit_str_to_num_ok;
unwind_protect
implicit_str_to_num_ok = "true";
status = all (s1 == s2);
unwind_protect_cleanup
implicit_str_to_num_ok = tmp;
end_unwind_protect
endif
endif
endif
endfunction