23 lines
525 B
C
23 lines
525 B
C
|
/*
|
||
|
|
* wrapper exp2f(x)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
#include <math_private.h>
|
||
|
|
#include <math-svid-compat.h>
|
||
|
|
|
||
|
|
#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
|
||
|
|
float
|
||
|
|
__exp2f_compat (float x)
|
||
|
|
{
|
||
|
|
float z = __ieee754_exp2f (x);
|
||
|
|
if (__builtin_expect (!isfinite (z) || z == 0, 0)
|
||
|
|
&& isfinite (x) && _LIB_VERSION != _IEEE_)
|
||
|
|
/* exp2 overflow: 144, exp2 underflow: 145 */
|
||
|
|
return __kernel_standard_f (x, x, 144 + !!signbit (x));
|
||
|
|
|
||
|
|
return z;
|
||
|
|
}
|
||
|
|
compat_symbol (libm, __exp2f_compat, exp2f, GLIBC_2_1);
|
||
|
|
#endif
|