Functions Delphi

function Exp ( Number : Extended ) : Extended;


Description
The Exp function takes an integer or floating point Number and raises e (2.72) to that power.

This is only used for mathematical processing.

Exp has the opposite effect to Ln - the natural logarithm.

Related commands
Ln Gives the natural logarithm of a number
Log10 Gives the log to base 10 of a number

Example code : Calculate the exponent of 2
var
float : Double;
begin
// Get the natural logarithm of 2
float := Ln(2);
// Show this value
ShowMessage('Ln(2) = '+FloatToStr(float));
// Get the exponent of this value - reverses the Ln operation
float := Exp(float);
// Show this value
ShowMessage('Exp(Ln(2)) = '+FloatToStr(float));
end;

Show full unit code
Ln(2) = 0.693147180559945
Exp(Ln(2)) = 2