1/* w_acoshf.c -- float version of w_acosh.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
17#include <sys/cdefs.h>
18#if defined(LIBM_SCCS) && !defined(lint)
19__RCSID("$NetBSD: w_acoshf.c,v 1.5 1999/07/02 15:37:43 simonb Exp $");
20#endif
21
22/*
23 * wrapper acoshf(x)
24 */
25
26#include "math.h"
27#include "math_private.h"
28
29float
30acoshf(float x)		/* wrapper acoshf */
31{
32#ifdef _IEEE_LIBM
33	return __ieee754_acoshf(x);
34#else
35	float z;
36	z = __ieee754_acoshf(x);
37	if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
38	if(x<(float)1.0) {
39		/* acosh(x<1) */
40	        return (float)__kernel_standard((double)x,(double)x,129);
41	} else
42	    return z;
43#endif
44}
45