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   "copysign.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(copysign,function)
  33 #include "libm_synonyms.h"
  34 
  35         ENTRY(copysign)
  36         movl    8(%esp),%eax            / eax <-- hi_32(x)
  37         movl    16(%esp),%ecx           / ecx <-- hi_32(y)
  38         andl    $0x7fffffff,%eax        / eax <-- hi_32(abs(x))
  39         andl    $0x80000000,%ecx        / ecx[31] <-- sign_bit(y)
  40         orl     %ecx,%eax               / eax <-- hi_32(copysign(x,y))
  41         movl    4(%esp),%ecx            / ecx <-- lo_32(x)
  42                                         /       = lo_32(copysign(x,y))
  43         subl    $8,%esp                 / set up loading dock for result
  44         movl    %ecx,(%esp)             / copy lo_32(result) to loading dock
  45         movl    %eax,4(%esp)            / copy hi_32(result) to loading dock
  46         fldl    (%esp)                  / load copysign(x,y)
  47         fwait                           / in case fldl causes exception
  48         addl    $8,%esp                 / restore stack-pointer for return
  49         ret
  50         .align  4
  51         SET_SIZE(copysign)

  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   "copysign.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(copysign,function)

  33 
  34         ENTRY(copysign)
  35         movl    8(%esp),%eax            / eax <-- hi_32(x)
  36         movl    16(%esp),%ecx           / ecx <-- hi_32(y)
  37         andl    $0x7fffffff,%eax        / eax <-- hi_32(abs(x))
  38         andl    $0x80000000,%ecx        / ecx[31] <-- sign_bit(y)
  39         orl     %ecx,%eax               / eax <-- hi_32(copysign(x,y))
  40         movl    4(%esp),%ecx            / ecx <-- lo_32(x)
  41                                         /       = lo_32(copysign(x,y))
  42         subl    $8,%esp                 / set up loading dock for result
  43         movl    %ecx,(%esp)             / copy lo_32(result) to loading dock
  44         movl    %eax,4(%esp)            / copy hi_32(result) to loading dock
  45         fldl    (%esp)                  / load copysign(x,y)
  46         fwait                           / in case fldl causes exception
  47         addl    $8,%esp                 / restore stack-pointer for return
  48         ret
  49         .align  4
  50         SET_SIZE(copysign)