minix/lib/libm/arch/vax/n_sincos.S
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

112 lines
3.2 KiB
ArmAsm

/* $NetBSD: n_sincos.S,v 1.8 2003/08/07 16:44:45 agc Exp $ */
/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
* 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. 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.
*
* @(#)sincos.s 8.1 (Berkeley) 6/4/93
*/
/*
* This is the implementation of Peter Tang's double precision
* sine and cosine for the VAX using Bob Corbett's argument reduction.
*
* Notes:
* under 1,024,000 random arguments testing on [0,2*pi]
* sin() observed maximum error = 0.814 ulps
* cos() observed maximum error = 0.792 ulps
*
* double sin(arg)
* double arg;
* method: true range reduction to [-pi/4,pi/4], P. Tang & B. Corbett
* S. McDonald, April 4, 1985
*/
#include <machine/asm.h>
ENTRY(sinf, 0)
cvtfd 4(%ap),-(%sp)
calls $2,_C_LABEL(sin)
cvtdf %r0,%r0
ret
ENTRY(sin, 0xfc0)
movq 4(%ap),%r0
bicw3 $0x807f,%r0,%r2
beql 1f # if x is zero or reserved operand then return x
/*
* Save the PSL's IV & FU bits on the stack.
*/
movpsl %r2
bicw3 $0xff9f,%r2,-(%sp)
/*
* Clear the IV & FU bits.
*/
bicpsw $0x0060
/*
* Entered by sine ; save 0 in %r4 .
*/
jsb _C_LABEL(__libm_argred)+2
movl $0,%r4
jsb _C_LABEL(__libm_sincos)+2
bispsw (%sp)+
1: ret
/*
* double cos(arg)
* double arg;
* method: true range reduction to [-pi/4,pi/4], P. Tang & B. Corbett
* S. McDonald, April 4, 1985
*/
ENTRY(cosf, 0)
cvtfd 4(%ap),-(%sp)
calls $2,_C_LABEL(cos)
cvtdf %r0,%r0
ret
ENTRY(cos, 0x0fc0)
movq 4(%ap),%r0
bicw3 $0x7f,%r0,%r2
cmpw $0x8000,%r2
beql 1f # if x is reserved operand then return x
/*
* Save the PSL's IV & FU bits on the stack.
*/
movpsl %r2
bicw3 $0xff9f,%r2,-(%sp)
/*
* Clear the IV & FU bits.
*/
bicpsw $0x0060
/*
* Entered by cosine ; save 1 in %r4 .
*/
jsb _C_LABEL(__libm_argred)+2
movl $1,%r4
jsb _C_LABEL(__libm_sincos)+2
bispsw (%sp)+
1: ret