libm/w_lgammal_r.c

   1 /* w_lgammal_r.c -- long double version of w_lgamma_r.c.
   2  * Conversion to long double by Ulrich Drepper,
   3  * Cygnus Support, drepper@cygnus.com.
   4  */
   5
   6 /*
   7  * ====================================================
   8  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   9  *
  10  * Developed at SunPro, a Sun Microsystems, Inc. business.
  11  * Permission to use, copy, modify, and distribute this
  12  * software is freely granted, provided that this notice
  13  * is preserved.
  14  * ====================================================
  15  */
  16
  17 /*
  18  * wrapper long double lgammal_r(long double x, int *signgamp)
  19  */
  20
  21 #include <math.h>
  22 #include "math_private.h"
  23
  24 #if !defined __NO_LONG_DOUBLE_MATH
  25 libm_hidden_proto(lgammal_r)
  26 long double
  27 lgammal_r(long double x, int *signgamp)
  28 {
  29 # if defined(__UCLIBC_HAS_FENV__)
  30         long double y = (long double) __ieee754_lgamma_r((double)x,signgamp);
  31         if(__builtin_expect(!isfinite(y), 0)
  32            && isfinite(x) && _LIB_VERSION != _IEEE_)
  33                 return __kernel_standard(x, x,
  34                                          floorl(x)==x&&x<=0.0
  35                                          ? 215 /* lgamma pole */
  36                                          : 214); /* lgamma overflow */
  37
  38         return y;
  39 # else
  40         return (long double) __ieee754_lgamma_r((double)x,signgamp);
  41 # endif /* __UCLIBC_HAS_FENV__ */
  42 }
  43 libm_hidden_def(lgammal_r)
  44 #endif /* __NO_LONG_DOUBLE_MATH */