Sgn 
رʾַŵ

Sgn(number)
number Чֵʽ

ֵ
Sgn ·ֵ

 number Ϊ Sgn  
 1 
 0 
С -1 

˵
number ķž Sgn ķֵ

ʾ Sgn ֵķţ

Dim MyVar1, MyVar2, MyVar3, MySign
MyVar1 = 12: MyVar2 = -2.4: MyVar3 = 0
MySign = Sgn(MyVar1)   '  1
MySign = Sgn(MyVar2)   '  -1
MySign = Sgn(MyVar3)   '  0
