1259262Stijl# $OpenBSD: sqroot.m4,v 1.3 2003/06/03 02:56:11 millert Exp $ 216748Sjmallett# $NetBSD: sqroot.m4,v 1.4 1995/09/28 05:38:01 tls Exp $ 31590Srgrimes# 41590Srgrimes# Copyright (c) 1989, 1993 51590Srgrimes# The Regents of the University of California. All rights reserved. 61590Srgrimes# 71590Srgrimes# This code is derived from software contributed to Berkeley by 81590Srgrimes# Ozan Yigit. 91590Srgrimes# 101590Srgrimes# Redistribution and use in source and binary forms, with or without 111590Srgrimes# modification, are permitted provided that the following conditions 121590Srgrimes# are met: 131590Srgrimes# 1. Redistributions of source code must retain the above copyright 141590Srgrimes# notice, this list of conditions and the following disclaimer. 151590Srgrimes# 2. Redistributions in binary form must reproduce the above copyright 161590Srgrimes# notice, this list of conditions and the following disclaimer in the 171590Srgrimes# documentation and/or other materials provided with the distribution. 18259262Stijl# 3. Neither the name of the University nor the names of its contributors 191590Srgrimes# may be used to endorse or promote products derived from this software 201590Srgrimes# without specific prior written permission. 211590Srgrimes# 221590Srgrimes# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 231590Srgrimes# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 241590Srgrimes# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 251590Srgrimes# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 261590Srgrimes# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 271590Srgrimes# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 281590Srgrimes# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 291590Srgrimes# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 301590Srgrimes# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 311590Srgrimes# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 321590Srgrimes# SUCH DAMAGE. 331590Srgrimes# 34216370Sjoel# $FreeBSD$ 35216370Sjoel# 361590Srgrimes# @(#)sqroot.m4 8.1 (Berkeley) 6/6/93 371590Srgrimes# 381590Srgrimes 391590Srgrimesdefine(square_root, 401590Srgrimes `ifelse(eval($1<0),1,negative-square-root, 411590Srgrimes `square_root_aux($1, 1, eval(($1+1)/2))')') 421590Srgrimesdefine(square_root_aux, 431590Srgrimes `ifelse($3, $2, $3, 441590Srgrimes $3, eval($1/$2), $3, 451590Srgrimes `square_root_aux($1, $3, eval(($3+($1/$3))/2))')') 46