- Function Sign(x)
Sign
Sign(
x ! (input) numerical expression
)
Arguments
- x
A scalar numerical expression.
Return Value
The function
Sign
returns \(+1\) if \(x > 0\), \(-1\) if \(x < 0\) and 0 if \(x = 0\).
Note
The function Sign
can be used in constraints of nonlinear
mathematical programs. However, nonlinear solver may experience
convergence problems round 0.
See also
The function Abs
. Arithmetic functions are discussed in full
detail in Arithmetic Functions of the Language Reference.