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Value :: log - Calculate logarithm on base-e

The function returns the base-e logarithm value for the value.
Return value:  Double value ( double  )

A double value is a 64 bit floating number.

Implementation details

double Value  :: log (  )

The function converts the value into a double float point value. When conversion fails, the function throws an exception. Otherwise, the function calculates the logarithm on base-e.
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