sign

Find the sign function of a number.

📝 Syntax

• R = sign(M)

📥 Input argument

• M - a variable

📤 Output argument

• R - result of sign.

📄 Description

sign find the sign function of a number.

-1 if the corresponding element of M is less than 0.

0 if the corresponding element of M equals 0.

1 if the corresponding element of M is greater than 0.

If input argument is a complex number, sign computes M ./ abs(M).

💡 Example

V = [-1 0 15 NaN Inf];
sign(V)

🔗 See also

conj, abs.

🕔 History

Version	📄 Description
1.0.0	initial version