blob: c4e9e941640be66ba32a726d1f3d1f5a6fcc58f8 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
/*
* wrapper exp2f(x)
*/
#include <float.h>
#include <math.h>
#include <math_private.h>
static const float o_threshold = (float) FLT_MAX_EXP;
static const float u_threshold = (float) (FLT_MIN_EXP - FLT_MANT_DIG - 1);
float
__exp2f (float x)
{
if (__builtin_expect (islessequal (x, u_threshold)
|| isgreater (x, o_threshold), 0)
&& _LIB_VERSION != _IEEE_ && __finitef (x))
/* exp2 overflow: 144, exp2 underflow: 145 */
return __kernel_standard_f (x, x, 144 + (x <= o_threshold));
return __ieee754_exp2f (x);
}
weak_alias (__exp2f, exp2f)
|