1 /* w_acosf.c -- float version of w_acos.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5 /*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16 #include <sys/cdefs.h>
17 #if defined(LIBM_SCCS) && !defined(lint)
18 __RCSID("$NetBSD: w_acosf.c,v 1.6 2002/05/26 22:01:59 wiz Exp $");
19 #endif
20
21 /*
22 * wrap_acosf(x)
23 */
24
25 #include "math.h"
26 #include "math_private.h"
27
28
29 float
acosf(float x)30 acosf(float x) /* wrapper acosf */
31 {
32 #ifdef _IEEE_LIBM
33 return __ieee754_acosf(x);
34 #else
35 float z;
36 z = __ieee754_acosf(x);
37 if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
38 if(fabsf(x)>(float)1.0) {
39 /* acosf(|x|>1) */
40 return (float)__kernel_standard((double)x,(double)x,101);
41 } else
42 return z;
43 #endif
44 }
45