66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
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/* @(#)w_j0.c 1.3 95/01/18 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunSoft, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* wrapper j0(double x), y0(double x)
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*/
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#include "math.h"
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#ifdef __STDC__
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double j0(double x) /* wrapper j0 */
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#else
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double j0(x) /* wrapper j0 */
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double x;
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_j0(x);
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#else
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double z = __ieee754_j0(x);
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if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
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if(fabs(x)>X_TLOSS) {
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return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */
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} else
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return z;
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#endif
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}
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#ifdef __STDC__
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double y0(double x) /* wrapper y0 */
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#else
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double y0(x) /* wrapper y0 */
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double x;
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_y0(x);
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#else
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double z;
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z = __ieee754_y0(x);
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if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
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if(x <= 0.0){
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if(x==0.0)
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/* d= -one/(x-x); */
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return __kernel_standard(x,x,8);
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else
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/* d = zero/(x-x); */
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return __kernel_standard(x,x,9);
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}
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if(x>X_TLOSS) {
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return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */
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} else
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return z;
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#endif
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}
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