newlib/libm/mathfp/sf_exp2.c

   1 /* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
   2  *
   3  * Permission to use, copy, modify, and distribute this software
   4  * is freely granted, provided that this notice is preserved.
   5  */
   6
   7 #include "fdlibm.h"
   8
   9 float
  10 _DEFUN (exp2f, (float),
  11         float x)
  12 {
  13   return powf(2.0, x);
  14 }
  15
  16 #ifdef _DOUBLE_IS_32BITS
  17
  18 double exp2 (double x)
  19 {
  20   return (double) exp2f ((float) x);
  21 }
  22
  23 #endif /* _DOUBLE_IS_32BITS */