Log()

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This function returns the natural (base e, approximately 2.718) logarithmic value of the number given. This is the inverse to the function Exp(number).
Note that the natural logarithm function is undefined for values less than 0.

Usage:

Log( number )

Parameters:

Returns:

Number

Examples (Both Crystal and Basic):

Log(0)	// Returns -INFINITY
Log(exp(1))	// Returns 1
Log(exp(1)*exp(1))	// Returns 2
Log(100)	// Returns 4.61

See also:

• Exp(number)
• Math functions

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