Function fast_math::exp [−][src]
pub fn exp(x: f32) -> f32
Compute a fast approximation to ex.
The maximum relative error for inputs for which the result is
normal (x ≥ -128 ln 2 ≈ -88.7) is less than
0.011. For x < -128 ln 2, the relative error in the (subnormal)
result can be as large as 1.
If x is NaN, exp returns NaN.
See also exp_raw which only works on -104 ≤ x ≤ 104,
but is % faster.