Examples using... token.ADD
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Package constant implements Values representing untyped
Go constants and their corresponding operations.
Sign returns -1, 0, or 1 depending on whether x < 0, x == 0, or x > 0;
x must be numeric or Unknown. For complex values x, the sign is 0 if x == 0,
otherwise it is != 0. If x is Unknown, the result is 1.