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Value :: tanh - Calculate hyperbolic tangent

The function returns the hyperbolic tangent for the value.
Return value:  Double value ( double  )

A double value is a 64 bit floating number.

Implementation details

double Value  :: tanh (  )

The function converts the value into a double float point value. When conversion fails, the function throws an exception. Otherwise, the function calculates the hyperbolic tangent.
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