csgn

Returns the sign of a vector of real of complex values.

Calling Sequence

s = csgn(z)

Arguments

:z The vector of values on which we want to compute the sign. : :s If the real part is not equal to zero:

• +1 if the real part of an element is positive
• -1 if the real part of an element is negative

If the real part is equal to zero:

• +1 if the imaginary part of an element is positive
• -1 if the imaginary part of an element is negative

if the element is equal to zero, then returns %nan :

Description

Returns the sign of a vector of real of complex values.

Examples

A = [1 1+%i 0 -1 1-%i -1-%i];
csgn(A)

See Also

• sign signum function
• signm matrix signum function