Function sign #

Compute the sign of a value. The sign of a value x is:

For matrices, the function is evaluated element wise.

Syntax #

math.sign(x)

Parameters #

Parameter Type Description
x number | BigNumber | Fraction | Complex | Array | Matrix | Unit The number for which to determine the sign

Returns #

Type Description
number | BigNumber | Fraction | Complex | Array | Matrix | Unit e The sign of x

Examples #

math.sign(3.5);               // returns 1
math.sign(-4.2);              // returns -1
math.sign(0);                 // returns 0

math.sign([3, 5, -2, 0, 2]);  // returns [1, 1, -1, 0, 1]

See also #

abs

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