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Check if a Value is Identically Zero

Syntax
inline bool IdenticalZero(const Type &x)

Description
If x is not of type AD<Base>, this function returns true if and only if x is equal to zero. Otherwise, it returns true if and only if it is equal to zero and the sequence of values
     
xx.value_, x.value_.value , ...
are all parameters.
Input File: cppad/local/identical.hpp