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In output result (Sum Value) longSum - as a 64-bit, signed integer doubleSum - as 64-bit floating point value Integer [ -1, 2, 100, 0, -19] signed -  range [-( 2^ 63 ) to +{( 2^ 63 ) - 1}   ] Unsigned -    range [ (0) to + {( 2^ 63 ) - 1}   ]