66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
|
|
/* @(#)w_j0.c 1.3 95/01/18 */
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
* wrapper ieee_j0(double x), ieee_y0(double x)
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
|
|
#ifdef __STDC__
|
|
double ieee_j0(double x) /* wrapper j0 */
|
|
#else
|
|
double ieee_j0(x) /* wrapper j0 */
|
|
double x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_j0(x);
|
|
#else
|
|
double z = __ieee754_j0(x);
|
|
if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
|
|
if(ieee_fabs(x)>X_TLOSS) {
|
|
return __kernel_standard(x,x,34); /* ieee_j0(|x|>X_TLOSS) */
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
|
|
#ifdef __STDC__
|
|
double ieee_y0(double x) /* wrapper y0 */
|
|
#else
|
|
double ieee_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_ || 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); /* ieee_y0(x>X_TLOSS) */
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|