SIGN function

Description

Sign value. SIGN(x) returns a number that indicates the sign of x: -1 if x is negative; 0 if x equals 0; or 1 if x is positive.

The argument x can be a real number or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the SIGN function applied to all elements.

Examples

SIGN(0) equals 0

SIGN(-2.23) equals -1

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Related functions

• ABS function: returns the absolute value of a number.
• List of Mathematical functions