The SIGN function is one of the math and trigonometry functions. It is used to return the sign of a number. If the number is positive, the function returns 1. If the number is negative, the function returns -1. If the number is 0, the function returns 0.
The SIGN function syntax is:
where number is a numeric value entered manually or included into the cell you make reference to.
To apply the SIGN function,
The result will be displayed in the selected cell.
The required argument is A1, where A1 is 12. The number is positive, so the function returns 1.
If we change the A1 value from 12 to -12, the function returns -1:
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