5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file "remquo.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(remquo,function)
  33 #include "libm_synonyms.h"
  34 #include "libm_protos.h"
  35 
  36         ENTRY(remquo)
  37         fldl    12(%esp)                / load arg y
  38         fldl    4(%esp)                 / load arg x
  39 .Lrem_loop:
  40         fprem1                          / partial remainder
  41         fstsw   %ax                     / store status word
  42         andw    $0x400,%ax              / check whether reduction complete
  43         jne     .Lrem_loop              / while reduction incomplete, do fprem1
  44         fstsw   %ax
  45         fwait
  46         fstp    %st(1)
  47         movw    %ax,%dx
  48         andw    $0x4000,%dx             / get C3
  49         sarw    $13,%dx
  50         movw    %ax,%cx
  51         andw    $0x100,%cx              / get C0
  52         sarw    $6,%cx
  53         addw    %cx,%dx
  54         andw    $0x200,%ax              / get C1
  55         sarw    $9,%ax
  56         addw    %dx,%ax
  57         cwtl    
  58         movl    8(%esp),%edx            / sign and bexp of x
  59         movl    16(%esp),%ecx           / sign and bexp of y
  60         andl    $0x80000000,%edx        / edx <- sign(x)
  61         andl    $0x80000000,%ecx        / ecx <- sign(y)
  62         cmpl    %edx,%ecx
  63         je      .pos
  64         negl    %eax                    / negative n
  65 .pos:
  66         movl    20(%esp),%ecx
  67         movl    %eax,0(%ecx)            / last 3 significant bits of quotient
  68         ret
  69         .align  4
  70         SET_SIZE(remquo)
--- EOF ---