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/// Exponential function and its inverse
///
///<a href="https://en.wikipedia.org/wiki/Exponential_function">https://en.wikipedia.org/wiki/Exponential_function</a>
pub trait Exponential
{
	/// Euler's number
	fn e() -> Self;

	///Exponential function
	fn exp(self: &Self) -> Self;

	/// Natural logiarithm function
	fn ln(self: &Self) -> Self;
}