43 lines
938 B
C
43 lines
938 B
C
/* @(#)w_jn.c 5.1 93/09/24 */
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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 SunPro, 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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#ifndef lint
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static char rcsid[] = "$Id$";
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#endif
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/*
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* wrapper jn(int n, double x)
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*/
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#include "math.h"
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#include "math_private.h"
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#ifdef __STDC__
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double jn(int n, double x) /* wrapper jn */
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#else
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double jn(n,x) /* wrapper jn */
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double x; int n;
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_jn(n,x);
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#else
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double z;
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z = __ieee754_jn(n,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((double)n,x,38); /* jn(|x|>X_TLOSS,n) */
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} else
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return z;
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#endif
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}
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