1 /* $NetBSD: w_acosf.c,v 1.8 2024/06/09 13:35:38 riastradh Exp $ */
2
3 /*
4 * w_acosf.c -- float version of w_acos.c.
5 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 */
7
8 /*
9 * ====================================================
10 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
11 *
12 * Developed at SunPro, a Sun Microsystems, Inc. business.
13 * Permission to use, copy, modify, and distribute this
14 * software is freely granted, provided that this notice
15 * is preserved.
16 * ====================================================
17 */
18
19 #include <sys/cdefs.h>
20 #if defined(LIBM_SCCS) && !defined(lint)
21 __RCSID("$NetBSD: w_acosf.c,v 1.8 2024/06/09 13:35:38 riastradh Exp $");
22 #endif
23
24 /*
25 * wrap_acosf(x)
26 */
27
28 #include "namespace.h"
29
30 #include "math.h"
31 #include "math_private.h"
32
__weak_alias(acosf,_acosf)33 __weak_alias(acosf, _acosf)
34
35 float
36 acosf(float x) /* wrapper acosf */
37 {
38 #ifdef _IEEE_LIBM
39 return __ieee754_acosf(x);
40 #else
41 float z;
42 z = __ieee754_acosf(x);
43 if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
44 if(fabsf(x)>(float)1.0) {
45 /* acosf(|x|>1) */
46 return (float)__kernel_standard((double)x,(double)x,101);
47 } else
48 return z;
49 #endif
50 }
51