math/w_lgammal_r_compat.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 #include <math-svid-compat.h>
  24 #include <libm-alias-ldouble.h>
  25
  26
  27 #if LIBM_SVID_COMPAT
  28 long double
  29 __lgammal_r(long double x, int *signgamp)
  30 {
  31         long double y = __ieee754_lgammal_r(x,signgamp);
  32         if(__builtin_expect(!isfinite(y), 0)
  33            && isfinite(x) && _LIB_VERSION != _IEEE_)
  34                 return __kernel_standard(x, x,
  35                                          __floorl(x)==x&&x<=0.0
  36                                          ? 215 /* lgamma pole */
  37                                          : 214); /* lgamma overflow */
  38
  39         return y;
  40 }
  41 libm_alias_ldouble_r (__lgamma, lgamma, _r)
  42 #endif