DelphiBasics
 LnFunction Gives the natural logarithm of a number System unit
 function Ln(Number Extended):Extended;
Description
The Ln function takes an integer or floating point Number and gives the natural logarithm of that number.

This is only used for mathematical processing.

Ln has the opposite effect to Exp - the exponent of a number. (2.72 raised to that number power).
Related commands
 Exp Gives the exponent of a number Log10 Gives the log to base 10 of a number
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 Example code : Calculate the exponent of 2 and the natural log of the result 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
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