mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/* @(#)w_j0.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_j0.c,v 1.6 1995/05/10 20:49:11 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* wrapper j0(double x), y0(double x)
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include "math_private.h"
|
|
|
|
#ifdef __STDC__
|
|
double j0(double x) /* wrapper j0 */
|
|
#else
|
|
double j0(x) /* wrapper j0 */
|
|
double x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_j0(x);
|
|
#else
|
|
double z = __ieee754_j0(x);
|
|
if(_LIB_VERSION == _IEEE_ || __isnan(x)) return z;
|
|
if(fabs(x)>X_TLOSS) {
|
|
return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (j0, j0l)
|
|
#endif
|
|
|
|
|
|
#ifdef __STDC__
|
|
double y0(double x) /* wrapper y0 */
|
|
#else
|
|
double y0(x) /* wrapper y0 */
|
|
double x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_y0(x);
|
|
#else
|
|
double z;
|
|
z = __ieee754_y0(x);
|
|
if(_LIB_VERSION == _IEEE_ || __isnan(x) ) return z;
|
|
if(x <= 0.0){
|
|
if(x==0.0)
|
|
/* d= -one/(x-x); */
|
|
return __kernel_standard(x,x,8);
|
|
else
|
|
/* d = zero/(x-x); */
|
|
return __kernel_standard(x,x,9);
|
|
}
|
|
if(x>X_TLOSS) {
|
|
return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (y0, y0l)
|
|
#endif
|