pub fn exp2_raw(x: f32) -> f32Expand description
Compute a fast approximation to 2x for
-151 ≤ x ≤ 151.
This will return unspecified nonsense if x does not satisfy
those requirements. Use exp2 if correct handling is required (at
the expense of some speed).
The maximum relative error for inputs for which the result is
normal (x ≥ -128) is less than 0.011. For x < -128, the
relative error in the (subnormal) result can be as large as 1.