author | Claus Gittinger <cg@exept.de> |
Thu, 27 Jun 2019 12:42:13 +0200 | |
branch | cvs_MAIN |
changeset 3920 | 47a7b4a23bee |
parent 2353 | fa7400d022a0 |
child 2380 | 9195eccdcbd9 |
permissions | -rw-r--r-- |
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/* @(#)w_gamma_r.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 double gamma_r(double x, int *signgamp) |
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*/ |
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#include "fdlibm.h" |
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#ifdef __STDC__ |
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double gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ |
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#else |
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double gamma_r(x,signgamp) /* wrapper lgamma_r */ |
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double x; int *signgamp; |
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#endif |
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{ |
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#ifdef _IEEE_LIBM |
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return __ieee754_gamma_r(x,signgamp); |
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#else |
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double y; |
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y = __ieee754_gamma_r(x,signgamp); |
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if(_LIB_VERSION == _IEEE_) return y; |
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if(!finite(y)&&finite(x)) { |
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if(floor(x)==x&&x<=0.0) |
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return __kernel_standard(x,x,41); /* gamma pole */ |
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else |
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return __kernel_standard(x,x,40); /* gamma overflow */ |
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} else |
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return y; |
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#endif |
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} |