math/w_exp2l_compat.c

   1 /*
   2  * wrapper exp2l(x)
   3  */
   4
   5 #include <math.h>
   6 #include <math_private.h>
   7 #include <math-svid-compat.h>
   8
   9 long double
  10 __exp2l (long double x)
  11 {
  12   long double z = __ieee754_exp2l (x);
  13   if (__builtin_expect (!isfinite (z) || z == 0, 0)
  14       && isfinite (x) && _LIB_VERSION != _IEEE_)
  15     /* exp2 overflow: 244, exp2 underflow: 245 */
  16     return __kernel_standard_l (x, x, 244 + !!signbit (x));
  17
  18   return z;
  19 }
  20 weak_alias (__exp2l, exp2l)