math/w_lgammaf_r.c

   1 /* w_lgammaf_r.c -- float version of w_lgamma_r.c.
   2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
   3  */
   4
   5 /*
   6  * ====================================================
   7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   8  *
   9  * Developed at SunPro, a Sun Microsystems, Inc. business.
  10  * Permission to use, copy, modify, and distribute this
  11  * software is freely granted, provided that this notice
  12  * is preserved.
  13  * ====================================================
  14  */
  15
  16 /*
  17  * wrapper float lgammaf_r(float x, int *signgamp)
  18  */
  19
  20 #include <math.h>
  21 #include <math_private.h>
  22
  23
  24 float
  25 __lgammaf_r(float x, int *signgamp)
  26 {
  27         float y = __ieee754_lgammaf_r(x,signgamp);
  28         if(__builtin_expect(!isfinite(y), 0)
  29            && isfinite(x) && _LIB_VERSION != _IEEE_)
  30                 return __kernel_standard_f(x, x,
  31                                            __floorf(x)==x&&x<=0.0f
  32                                            ? 115 /* lgamma pole */
  33                                            : 114); /* lgamma overflow */
  34
  35         return y;
  36 }
  37 weak_alias (__lgammaf_r, lgammaf_r)