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- /*
- * wrapper exp2f(x)
- */
- #include <math.h>
- #include "math_private.h"
- float
- exp2f (float x)
- {
- #if defined(__UCLIBC_HAS_FENV__)
- float z = (float) pow(2.0, (double) 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;
- #else
- return (float) pow(2.0, (double) x);
- #endif
- }
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