1 # $OpenBSD: sqroot.m4,v 1.2 1996/06/26 05:36:20 deraadt Exp $
2 # $NetBSD: sqroot.m4,v 1.4 1995/09/28 05:38:01 tls Exp $
4 # Copyright (c) 1989, 1993
5 # The Regents of the University of California. All rights reserved.
7 # This code is derived from software contributed to Berkeley by
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11 # modification, are permitted provided that the following conditions
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14 # notice, this list of conditions and the following disclaimer.
15 # 2. Redistributions in binary form must reproduce the above copyright
16 # notice, this list of conditions and the following disclaimer in the
17 # documentation and/or other materials provided with the distribution.
18 # 3. Neither the name of the University nor the names of its contributors
19 # may be used to endorse or promote products derived from this software
20 # without specific prior written permission.
22 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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34 # $FreeBSD: src/usr.bin/m4/TEST/sqroot.m4,v 1.3 2012/11/17 01:54:24 svnexp Exp $
36 # @(#)sqroot.m4 8.1 (Berkeley) 6/6/93
40 `ifelse(eval($1<0),1,negative-square-root,
41 `square_root_aux($1, 1, eval(($1+1)/2))')')
42 define(square_root_aux,
45 `square_root_aux($1, $3, eval(($3+($1/$3))/2))')')