Sign
Sign[x]
returns the sign of x
.
Attributes[Sign] := {Listable, NumericFunction, Protected, ReadProtected}
Simple examples
In[1]:= Sign[5] Out[1]= 1
In[2]:= Sign[0] Out[2]= 0
In[3]:= Sign[-5] Out[3]= -1
In[4]:= Sign[5.] Out[4]= 1
In[5]:= Sign[0.] Out[5]= 0
In[6]:= Sign[-5.] Out[6]= -1
In[7]:= Sign[(1)/(2)] Out[7]= 1