Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | Download | RSS feed

  1. /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
  2. /* w_lgammaf.c -- float version of w_lgamma.c.
  3.  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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. #if defined(LIBM_SCCS) && !defined(lint)
  18. static char rcsid[] = "$Id: w_lgammaf.c,v 1.1 1994/08/10 20:35:00 jtc Exp $";
  19. #endif
  20.  
  21. #include "math.h"
  22. #include "math_private.h"
  23.  
  24. extern int signgam;
  25.  
  26. #ifdef __STDC__
  27.         float lgammaf(float x)
  28. #else
  29.         float lgammaf(x)
  30.         float x;
  31. #endif
  32. {
  33. #ifdef _IEEE_LIBM
  34.         return __ieee754_lgammaf_r(x,&signgam);
  35. #else
  36.         float y;
  37.         y = __ieee754_lgammaf_r(x,&signgam);
  38.         if(_LIB_VERSION == _IEEE_) return y;
  39.         if(!finitef(y)&&finitef(x)) {
  40.             if(floorf(x)==x&&x<=(float)0.0)
  41.                 /* lgamma pole */
  42.                 return (float)__kernel_standard((double)x,(double)x,115);
  43.             else
  44.                 /* lgamma overflow */
  45.                 return (float)__kernel_standard((double)x,(double)x,114);
  46.         } else
  47.             return y;
  48. #endif
  49. }            
  50.