| 1 | /* @(#)wr_lgamma.c 5.1 93/09/24 */ |
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| 2 | /* |
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| 3 | * ==================================================== |
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| 4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 5 | * |
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| 6 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 7 | * Permission to use, copy, modify, and distribute this |
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| 8 | * software is freely granted, provided that this notice |
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| 9 | * is preserved. |
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| 10 | * ==================================================== |
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| 11 | */ |
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| 12 | |
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| 13 | /* |
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| 14 | * wrapper double lgamma_r(double x, int *signgamp) |
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| 15 | */ |
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| 16 | |
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| 17 | #include <math.h> |
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| 18 | #include <math_private.h> |
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| 19 | #include <math-svid-compat.h> |
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| 20 | #include <libm-alias-double.h> |
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| 21 | |
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| 22 | |
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| 23 | #if LIBM_SVID_COMPAT |
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| 24 | double |
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| 25 | __lgamma_r(double x, int *signgamp) |
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| 26 | { |
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| 27 | double y = __ieee754_lgamma_r(x,signgamp); |
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| 28 | if(__builtin_expect(!isfinite(y), 0) |
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| 29 | && isfinite(x) && _LIB_VERSION != _IEEE_) |
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| 30 | return __kernel_standard(x, x, |
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| 31 | floor(x)==x&&x<=0.0 |
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| 32 | ? 15 /* lgamma pole */ |
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| 33 | : 14); /* lgamma overflow */ |
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| 34 | |
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| 35 | return y; |
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| 36 | } |
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| 37 | libm_alias_double_r (__lgamma, lgamma, _r) |
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| 38 | #endif |
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| 39 | |
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