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 "asinf.s"
30
31 #include "libm.h"
32 LIBM_ANSI_PRAGMA_WEAK(asinf,function)
33 #include "libm_synonyms.h"
34 #include "libm_protos.h"
35
36 #undef fabs
37
38 ENTRY(asinf)
39 flds 4(%esp) / push x
40 fld1 / push 1
41 fld %st(1) / x , 1 , x
42 fabs / |x| , 1 , x
43 fucomp
44 fstsw %ax
45 sahf
46 ja .ERR
47 fadd %st(1),%st / 1+x,x
48 fld1 / 1,1+x,x
49 fsub %st(2),%st / 1-x,1+x,x
50 fmulp %st,%st(1) / (1-x)*(1+x),x
51 fsqrt / sqrt((1-x)*(1+x)),x
52 fpatan / atan(x/sqrt((1-x)*(1+x)))
53 ret
|
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 "asinf.s"
30
31 #include "libm.h"
32 LIBM_ANSI_PRAGMA_WEAK(asinf,function)
33 #include "libm_protos.h"
34
35 #undef fabs
36
37 ENTRY(asinf)
38 flds 4(%esp) / push x
39 fld1 / push 1
40 fld %st(1) / x , 1 , x
41 fabs / |x| , 1 , x
42 fucomp
43 fstsw %ax
44 sahf
45 ja .ERR
46 fadd %st(1),%st / 1+x,x
47 fld1 / 1,1+x,x
48 fsub %st(2),%st / 1-x,1+x,x
49 fmulp %st,%st(1) / (1-x)*(1+x),x
50 fsqrt / sqrt((1-x)*(1+x)),x
51 fpatan / atan(x/sqrt((1-x)*(1+x)))
52 ret
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