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 "expm1l.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(expm1l,function)
  33 #include "libm_synonyms.h"
  34 
  35         .data
  36         .align  4
  37 ln2_hi: .long   0xd1d00000, 0xb17217f7, 0x00003ffe
  38 ln2_lo: .long   0x4c67fc0d, 0x8654361c, 0x0000bfce
  39 
  40         ENTRY(expm1l)
  41         movl    12(%esp),%ecx           / cx <--sign&bexp(x)
  42         movl    %ecx,%eax               / ax <--sign&bexp(x)
  43         andl    $0x00007fff,%ecx        / ecx <-- zero_xtnd(bexp(x))
  44         cmpl    $0x00003ffe,%ecx        / Is |x| < ln(2)?
  45         jb      .shortcut               / If so, take a shortcut.
  46         je      .check_tail             / |x| may be only slightly < ln(2)
  47         cmpl    $0x00007fff,%ecx        / bexp(|x|) = bexp(INF)?
  48         je      .not_finite             / if so, x is not finite
  49         andl    $0x0000ffff,%eax        / eax <-- sign&bexp(x)
  50         cmpl    $0x0000c006,%eax        / x <= -128?
  51         jae     1f                      / if so, simply return -1
  52         cmpl    $0x0000400d,%ecx        / |x| < 16384 = 2^14?
  53         jb      .finite_non_special     / if so, proceed with argument reduction

  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 "expm1l.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(expm1l,function)

  33 
  34         .data
  35         .align  4
  36 ln2_hi: .long   0xd1d00000, 0xb17217f7, 0x00003ffe
  37 ln2_lo: .long   0x4c67fc0d, 0x8654361c, 0x0000bfce
  38 
  39         ENTRY(expm1l)
  40         movl    12(%esp),%ecx           / cx <--sign&bexp(x)
  41         movl    %ecx,%eax               / ax <--sign&bexp(x)
  42         andl    $0x00007fff,%ecx        / ecx <-- zero_xtnd(bexp(x))
  43         cmpl    $0x00003ffe,%ecx        / Is |x| < ln(2)?
  44         jb      .shortcut               / If so, take a shortcut.
  45         je      .check_tail             / |x| may be only slightly < ln(2)
  46         cmpl    $0x00007fff,%ecx        / bexp(|x|) = bexp(INF)?
  47         je      .not_finite             / if so, x is not finite
  48         andl    $0x0000ffff,%eax        / eax <-- sign&bexp(x)
  49         cmpl    $0x0000c006,%eax        / x <= -128?
  50         jae     1f                      / if so, simply return -1
  51         cmpl    $0x0000400d,%ecx        / |x| < 16384 = 2^14?
  52         jb      .finite_non_special     / if so, proceed with argument reduction