Function hydra_dx_math::transcendental::exp

pub fn exp<S, D>(operand: S, neg: bool) -> Result<D, ()> where
    S: FixedUnsigned + PartialOrd<D>,
    D: FixedUnsigned + PartialOrd<S> + From<S>, 

exponential function e^(operand) neg - bool indicates that operand is negative value.