sign

Find the sign function of a number.

📝 Syntaxe

• R = sign(M)

📥 Argument d'entrée

• M - a variable

📤 Argument de sortie

• 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).

💡 Exemple

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

🔗 Voir aussi

conj, abs.

🕔 Historique

Version	📄 Description
1.0.0	version initiale