mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/* @(#)w_acos.c 5.1 93/09/24 */
|
|
/*
|
|
* ====================================================
|
|
* 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_acos.c,v 1.6 1995/05/10 20:48:26 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* wrap_acos(x)
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include "math_private.h"
|
|
|
|
|
|
#ifdef __STDC__
|
|
double __acos(double x) /* wrapper acos */
|
|
#else
|
|
double __acos(x) /* wrapper acos */
|
|
double x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_acos(x);
|
|
#else
|
|
double z;
|
|
z = __ieee754_acos(x);
|
|
if(_LIB_VERSION == _IEEE_ || __isnan(x)) return z;
|
|
if(fabs(x)>1.0) {
|
|
return __kernel_standard(x,x,1); /* acos(|x|>1) */
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
weak_alias (__acos, acos)
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (__acos, __acosl)
|
|
weak_alias (__acos, acosl)
|
|
#endif
|