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erfcx.m

# Copyright (C) 2006   Sylvain Pelissier   <sylvain.pelissier@gmail.com>
##
## This program 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 of the License, or
## (at your option) any later version.
##
## This program 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 this program; If not, see <http://www.gnu.org/licenses/>.

## ERFCX compute the scaled complementary error function define by :
##
##          erfcx(x) = exp(x^2)*erfc(x)
##
##

function  = erfcx(x)
      if (nargin != 1)
                  usage ("erfcx(x)");
      endif
      y = exp(x.^2).*erfc(x);
endfunction;

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