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   "copysignl.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(copysignl,function)
  33 #include "libm_synonyms.h"
  34 
  35         ENTRY(copysignl)
  36         movl    12(%esp),%eax           / sign and bexp of x
  37         movl    24(%esp),%ecx           / sign and bexp of y
  38         andl    $0x00007fff,%eax        / eax <-- bexp(x)
  39         andl    $0x00008000,%ecx        / ecx <-- sign(y)
  40         orl     %ecx,%eax               / eax <-- bexp(x) with sign(y)
  41         movl    8(%esp),%ecx            / ecx <-- hi_32(sgnfcnd(x))
  42         movl    4(%esp),%edx            / edx <-- lo_32(sgnfcnd(x))
  43         subl    $12,%esp                / set up loading dock for result
  44         movl    %edx,(%esp)             / copy lo_32(result's sgnfcnd)
  45                                         / to loading dock
  46         movl    %ecx,4(%esp)            / copy hi_32(result's sgnfcnd)
  47                                         / to loading dock
  48         movl    %eax,8(%esp)            / copy sign&bexp(result)
  49                                         / to loading dock
  50         fldt    (%esp)                  / load copysign(x,y)
  51         addl    $12,%esp                / restore stack-pointer for return
  52         ret
  53         .align  4
  54         SET_SIZE(copysignl)
--- EOF ---