sqroot.m4 revision 16748
116748Sjmallett# $OpenBSD: sqroot.m4,v 1.2 1996/06/26 05:36:20 deraadt 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. 181590Srgrimes# 3. All advertising materials mentioning features or use of this software 191590Srgrimes# must display the following acknowledgement: 201590Srgrimes# This product includes software developed by the University of 211590Srgrimes# California, Berkeley and its contributors. 221590Srgrimes# 4. Neither the name of the University nor the names of its contributors 231590Srgrimes# may be used to endorse or promote products derived from this software 241590Srgrimes# without specific prior written permission. 251590Srgrimes# 261590Srgrimes# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 271590Srgrimes# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 281590Srgrimes# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 291590Srgrimes# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 301590Srgrimes# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 311590Srgrimes# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 321590Srgrimes# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 331590Srgrimes# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 341590Srgrimes# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 351590Srgrimes# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 361590Srgrimes# SUCH DAMAGE. 371590Srgrimes# 381590Srgrimes# @(#)sqroot.m4 8.1 (Berkeley) 6/6/93 391590Srgrimes# 401590Srgrimes 411590Srgrimesdefine(square_root, 421590Srgrimes `ifelse(eval($1<0),1,negative-square-root, 431590Srgrimes `square_root_aux($1, 1, eval(($1+1)/2))')') 441590Srgrimesdefine(square_root_aux, 451590Srgrimes `ifelse($3, $2, $3, 461590Srgrimes $3, eval($1/$2), $3, 471590Srgrimes `square_root_aux($1, $3, eval(($3+($1/$3))/2))')') 48