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## float

If an integer arithmetic expression overflows the limiting range, [-2^63 : 2^63] for 64-bit integers, the result is returned as a floating point value instead. This is not treated as an error. Example:

         gnuplot> set overflow float
         gnuplot> A = 2**62 - 1;  print A, A+A, A+A+A
         4611686018427387903 9223372036854775806 1.38350580552822e+19