declare function Lerp{
	parameter a.
	parameter b.
	parameter t.
	return a + (b - a) * t.
}

declare function Map{
	parameter value.
	parameter low1.
	parameter high1.
	parameter low2.
	parameter high2.
	return low2 + (high2 - low2) * ((value - low1) / (high1 - low1)).
}

declare function ApproximateExp {
    parameter x.
    local result is 1.0. 
    local xPower is 1.0.
    local nFact is 1.0.

    // Loop 4 times (for terms 1 through 4, total 5 terms)
	from { local n is 1.} until n = 5 step {set n to n + 1.} do {
        SET xPower TO xPower * x.
        SET nFact TO nFact * n.
        SET result TO result + (xPower / nFact).
    }
    RETURN result.
}