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BSD 4_3_Net_2 release
[unix-history] / usr / src / sys / tahoe / math / Ksinfcosf.s
/*-
* Copyright (c) 1985 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Computer Consoles Inc.
*
* 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.
*
* @(#)Ksinfcosf.s 7.1 (Berkeley) 12/6/90
*/
#include "../tahoe/SYS.h"
.text
ENTRY(Kcosf, 0)
tstl 4(fp) # if (arg < 0)
jgeq L23
lnd 4(fp)
std 4(fp) # arg = -arg;
L23: pushl 20(fp) # hfs
pushl $1
pushl 8(fp)
pushl 4(fp)
callf $20,_sinus
ret # return(sinus(arg,1));
ENTRY(Ksinf, 0)
pushl 20(fp) # hfs
pushl $0
pushl 8(fp)
pushl 4(fp)
callf $20,_sinus
ret # return(sinus(arg, 0));
ENTRY(sinus, 0)
subl3 $112,fp,sp
movl 8(fp),-80(fp)
movl 4(fp),-84(fp) # x = arg;
jgeq L34 # if (x < 0) {
lnd -84(fp)
std -84(fp) # x = -x;
addl2 $2,12(fp) # quad = quad + 2;}
L34: pushl 16(fp)
ldd _twoopi
pushd
ldd -84(fp)
pushd
callf $24,_Kmuld
movl r1,-88(fp)
movl r0,-84(fp) # std -84(fp) x = x * twoopi;
cmpd2 -84(fp),L36 # if (x > 32764) {
jleq L35
pushl 16(fp) # hfs
subl3 $60,fp,-(sp) # &e
pushl -80(fp)
pushl -84(fp) # x
callf $20,_Kmodf
clrl -92+4(fp)
movl r0,-92(fp) # y = modf(x, &e);
pushl 16(fp) # hfs
pushl $0
pushl 12(fp) # quad
pushl $0
pushl $0 # dummy acc
callf $24,_Kcvtld
pushl 16(fp) # hfs
pushl r1
pushl r0 # pushd (double)quad
ldd -60(fp)
pushd # &e
callf $24,_Kaddd
movl r1,-56(fp)
movl r0,-60(fp) # std -60(fp) e = e + quad;
pushl 16(fp) # hfs
subl3 $68,fp,-(sp) # &f
pushl 16(fp) # hfs
ldd -60(fp)
pushd # &e
ldd L37
pushd # 0.25
callf $24,_Kmuld
pushl r1
pushl r0 # pushd 0.25 * e
callf $20,_Kmodf # modf(0.25 * e, &f);
pushl 16(fp) # hfs
movl r1,-64(fp)
movl r0,-68(fp) # ldd -68(fp) &f
pushl r1
pushl r0 # pushd
ldd L38
pushd
callf $24,_Kmuld # 4*f
# std r0
pushl 16(fp) # hfs
pushl r1
pushl r0 # pushd
ldd -60(fp)
pushd
callf $24,_Ksubd # e - 4 * f
ldd r0 # load acc with result of Ksubd
cvdl 12(fp) # quad = (e - 4 * f); }
jbr L39
L35: ldd -84(fp) # else {
cvdl -96(fp) # k = x;
pushl 16(fp) # hfs
pushl $0
pushl -96(fp)
pushl $0
pushl $0 # acc
callf $24,_Kcvtld
# std r0
pushl 16(fp) # hfs
pushl r1
pushl r0 # pushd (double)k
ldd -84(fp)
pushd # x
callf $24,_Ksubd
movl r1,-88(fp)
movl r0,-92(fp) # std -92(fp) y = x - k;
addl3 -96(fp),12(fp),r0
andl3 $3,r0,12(fp) # quad = (quad + k) & 03; }
L39: bitl $1,12(fp) # if (quad & 01)
jeql L40
pushl 16(fp) # hfs
ldd -92(fp)
pushd # y
ldd L41
pushd # 1.0
callf $24,_Ksubd
movl r1,-88(fp)
movl r0,-92(fp) # std -92(fp) y = 1 - y;
L40: cmpl 12(fp),$1 # if (quad > 1)
jleq L42
lnd -92(fp)
std -92(fp) # y = -y;
L42: pushl 16(fp) # hfs
ldd -92(fp)
pushd
pushd
callf $24,_Kmuld # y*y
movl r1,-72(fp)
movl r0,-76(fp) # std -76(fp) ysq=y*y;
pushl 16(fp) # hfs
ldd -76(fp)
pushd
ldd _p4
pushd
callf $24,_Kmuld # p4*ysq
pushl 16(fp) # hfs
pushl _p3+4
pushl _p3
pushl r1
pushl r0 # pushd
callf $24,_Kaddd # p4*ysq+p3
pushl 16(fp) # hfs
pushl -72(fp)
pushl -76(fp)
pushl r1
pushl r0 # pushd
callf $24,_Kmuld # (p4*ysq+p3)*ysq
pushl 16(fp) # hfs
pushl _p2+4
pushl _p2
pushl r1
pushl r0 # pushd
callf $24,_Kaddd # (p4*ysq+p3)*ysq+p2
pushl 16(fp) # hfs
pushl -72(fp)
pushl -76(fp)
pushl r1
pushl r0 # pushd
callf $24,_Kmuld # ((p4*ysq+p3)*ysq+p2)*ysq
pushl 16(fp) # hfs
pushl _p1+4
pushl _p1
pushl r1
pushl r0 # pushd
callf $24,_Kaddd # ((p4*ysq+p3)*ysq+p2)*ysq+p1
pushl 16(fp) # hfs
pushl -72(fp)
pushl -76(fp)
pushl r1
pushl r0 # pushd
callf $24,_Kmuld # (((p4*ysq+p3)*ysq+p2)*ysq+p1)*ysq
pushl 16(fp) # hfs
pushl _p0+4
pushl _p0
pushl r1
pushl r0 # pushd
callf $24,_Kaddd # (((p4*ysq+p3)*ysq+p2)*ysq+p1)*ysq+p0
pushl 16(fp) # hfs
pushl -88(fp)
pushl -92(fp)
pushl r1
pushl r0 # pushd
callf $24,_Kmuld # ((((p4*ysq+p3)*ysq+p2)*ysq+p1)*ysq+p0)*y;
movl r1,-100(fp)
movl r0,-104(fp) # std -104(fp) temp1
ldd r0
cvdf
stf r0
ret#1
.data
.align 2
_twoopi:.long 0x4022F983, 0x6E4E4415 # .double .63661977236758134
_p0: .long 0x40C90FDA, 0x90304197 # .double 1.57079631844
_p1: .long 0xC0255DE0, 0xB36CEE75 # .double -.645963710599
_p2: .long 0x3EA33457, 0xA736E807 # .double .079689678945999999
_p3: .long 0xBC992665, 0x5E9A6554 # .double -.0046737666099999999
_p4: .long 0x3A1ED7FA, 0xCC54924E # .double .000151485129
L36: .long 0x47FFF800, 0x00000000 # .double 32764
L37: .long 0x3F800000, 0x00000000 # .double .25
L38: .long 0x41800000, 0x00000000 # .double 4
L41: .long 0x40800000, 0x00000000 # .double 1
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.