author | Jan Vrany <jan.vrany@fit.cvut.cz> |
Tue, 11 Jun 2019 22:03:11 +0100 | |
changeset 3914 | 35aa88fa58c1 |
parent 2380 | 9195eccdcbd9 |
permissions | -rw-r--r-- |
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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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/* |
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* wrapper j0(double x), y0(double x) |
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*/ |
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|
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#include "fdlibm.h" |
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|
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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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|
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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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} |