source: trunk/sys/libm/w_asin.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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1
2/* @(#)w_asin.c 5.1 93/09/24 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunPro, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
10 * is preserved.
11 * ====================================================
12 *
13 */
14
15/*
16 * wrapper asin(x)
17 */
18
19
20#include <libm/fdlibm.h>
21
22
23#ifdef __STDC__
24        double asin(double x)           /* wrapper asin */
25#else
26        double asin(x)                  /* wrapper asin */
27        double x;
28#endif
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}
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