sign function will takes input as number if the input number is "+ve" it returns +1 ,
if the input number is "-ve" it returns -1 ,
if the input number is "0" it returns 0 ,
Syntax
sign(number)
Examples
sign(4)=1
if the input number is "-ve" it returns -1 ,
if the input number is "0" it returns 0 ,
Syntax
sign(number)
Examples
sign(4)=1
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