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66 lines
1.5 KiB
66 lines
1.5 KiB
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/* @(#)w_j1.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 of j1,y1 |
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*/ |
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#include "fdlibm.h" |
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#ifdef __STDC__ |
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double ieee_j1(double x) /* wrapper j1 */ |
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#else |
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double ieee_j1(x) /* wrapper j1 */ |
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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_j1(x); |
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#else |
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double z; |
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z = __ieee754_j1(x); |
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if(_LIB_VERSION == _IEEE_ || ieee_isnan(x) ) return z; |
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if(ieee_fabs(x)>X_TLOSS) { |
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return __kernel_standard(x,x,36); /* ieee_j1(|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 ieee_y1(double x) /* wrapper y1 */ |
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#else |
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double ieee_y1(x) /* wrapper y1 */ |
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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_y1(x); |
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#else |
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double z; |
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z = __ieee754_y1(x); |
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if(_LIB_VERSION == _IEEE_ || 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,10); |
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else |
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/* d = zero/(x-x); */ |
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return __kernel_standard(x,x,11); |
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} |
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if(x>X_TLOSS) { |
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return __kernel_standard(x,x,37); /* ieee_y1(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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