1 /* @(#)w_asin.c 5.1 93/09/24 */
2 /*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12 #include <LibConfig.h>
13 #include <sys/EfiCdefs.h>
14 #if defined(LIBM_SCCS) && !defined(lint)
15 __RCSID("$NetBSD: w_asin.c,v 1.9 2002/05/26 22:01:59 wiz Exp $");
16 #endif
17
18 /*
19 * wrapper asin(x)
20 */
21
22
23 #include "math.h"
24 #include "math_private.h"
25
26
27 double
asin(double x)28 asin(double x) /* wrapper asin */
29 {
30 #ifdef _IEEE_LIBM
31 return __ieee754_asin(x);
32 #else
33 double z;
34 z = __ieee754_asin(x);
35 if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
36 if(fabs(x)>1.0) {
37 return __kernel_standard(x,x,2); /* asin(|x|>1) */
38 } else
39 return z;
40 #endif
41 }
42