/* | |
* wrapper exp2(x) | |
*/ | |
#include <math.h> | |
#include <math_private.h> | |
#include <math-svid-compat.h> | |
#include <libm-alias-double.h> | |
#if LIBM_SVID_COMPAT | |
double | |
__exp2 (double x) | |
{ | |
double z = __ieee754_exp2 (x); | |
if (__builtin_expect (!isfinite (z) || z == 0, 0) | |
&& isfinite (x) && _LIB_VERSION != _IEEE_) | |
/* exp2 overflow: 44, exp2 underflow: 45 */ | |
return __kernel_standard (x, x, 44 + !!signbit (x)); | |
return z; | |
} | |
libm_alias_double (__exp2, exp2) | |
#endif |