mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* w_atanhf.c -- float version of w_atanh.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_atanhf.c,v 1.3 1995/05/10 20:48:45 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* wrapper atanhf(x)
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include "math_private.h"
|
|
|
|
|
|
#ifdef __STDC__
|
|
float __atanhf(float x) /* wrapper atanhf */
|
|
#else
|
|
float __atanhf(x) /* wrapper atanhf */
|
|
float x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_atanhf(x);
|
|
#else
|
|
float z,y;
|
|
z = __ieee754_atanhf(x);
|
|
if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z;
|
|
y = fabsf(x);
|
|
if(y>=(float)1.0) {
|
|
if(y>(float)1.0)
|
|
/* atanhf(|x|>1) */
|
|
return (float)__kernel_standard((double)x,(double)x,130);
|
|
else
|
|
/* atanhf(|x|==1) */
|
|
return (float)__kernel_standard((double)x,(double)x,131);
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
weak_alias (__atanhf, atanhf)
|