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Diffstat (limited to 'usr.bin/m4/TEST/sqroot.m4')
| -rw-r--r-- | usr.bin/m4/TEST/sqroot.m4 | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/usr.bin/m4/TEST/sqroot.m4 b/usr.bin/m4/TEST/sqroot.m4 new file mode 100644 index 00000000000..6fc8d2c73c8 --- /dev/null +++ b/usr.bin/m4/TEST/sqroot.m4 @@ -0,0 +1,46 @@ +# $NetBSD: sqroot.m4,v 1.4 1995/09/28 05:38:01 tls Exp $ +# +# Copyright (c) 1989, 1993 +# The Regents of the University of California. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Ozan Yigit. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. All advertising materials mentioning features or use of this software +# must display the following acknowledgement: +# This product includes software developed by the University of +# California, Berkeley and its contributors. +# 4. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)sqroot.m4 8.1 (Berkeley) 6/6/93 +# + +define(square_root, + `ifelse(eval($1<0),1,negative-square-root, + `square_root_aux($1, 1, eval(($1+1)/2))')') +define(square_root_aux, + `ifelse($3, $2, $3, + $3, eval($1/$2), $3, + `square_root_aux($1, $3, eval(($3+($1/$3))/2))')') |