49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/* w_acoshf.c -- float version of w_acosh.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*
|
|
*/
|
|
|
|
#if defined(LIBM_SCCS) && !defined(lint)
|
|
static char rcsid[] = "$NetBSD: w_acoshf.c,v 1.3 1995/05/10 20:48:33 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* wrapper acoshf(x)
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include "math_private.h"
|
|
|
|
#ifdef __STDC__
|
|
float __acoshf(float x) /* wrapper acoshf */
|
|
#else
|
|
float __acoshf(x) /* wrapper acoshf */
|
|
float x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_acoshf(x);
|
|
#else
|
|
float z;
|
|
z = __ieee754_acoshf(x);
|
|
if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z;
|
|
if(x<(float)1.0) {
|
|
/* acosh(x<1) */
|
|
return (float)__kernel_standard((double)x,(double)x,129);
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
weak_alias (__acoshf, acoshf)
|