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 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28
29 .file "expm1.s"
30
31 #include "libm.h"
32 LIBM_ANSI_PRAGMA_WEAK(expm1,function)
33 #include "libm_synonyms.h"
34
35 .data
36 .align 4
37 .mhundred: .float -100.0
38
39 ENTRY(expm1)
40 movl 8(%esp),%ecx / ecx <-- hi_32(x)
41 andl $0x7fffffff,%ecx / ecx <-- hi_32(|x|)
42 cmpl $0x3fe62e42,%ecx / Is |x| < ln(2)?
43 jb .shortcut / If so, take a shortcut.
44 je .check_tail / |x| may be only slightly < ln(2)
45 cmpl $0x7ff00000,%ecx / hi_32(|x|) >= hi_32(INF)?
46 jae .not_finite / if so, x is not finite
47 .finite_non_special: / Here, ln(2) < |x| < INF
48 fldl 4(%esp) / push x
49
50 subl $8,%esp / save RP and set round-to-64-bits
51 fstcw (%esp)
52 movw (%esp),%ax
53 movw %ax,4(%esp)
|
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 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28
29 .file "expm1.s"
30
31 #include "libm.h"
32 LIBM_ANSI_PRAGMA_WEAK(expm1,function)
33
34 .data
35 .align 4
36 .mhundred: .float -100.0
37
38 ENTRY(expm1)
39 movl 8(%esp),%ecx / ecx <-- hi_32(x)
40 andl $0x7fffffff,%ecx / ecx <-- hi_32(|x|)
41 cmpl $0x3fe62e42,%ecx / Is |x| < ln(2)?
42 jb .shortcut / If so, take a shortcut.
43 je .check_tail / |x| may be only slightly < ln(2)
44 cmpl $0x7ff00000,%ecx / hi_32(|x|) >= hi_32(INF)?
45 jae .not_finite / if so, x is not finite
46 .finite_non_special: / Here, ln(2) < |x| < INF
47 fldl 4(%esp) / push x
48
49 subl $8,%esp / save RP and set round-to-64-bits
50 fstcw (%esp)
51 movw (%esp),%ax
52 movw %ax,4(%esp)
|