The SUM function returns a value that is the sum of the arguments. The type of this function depends upon the argument types as follows: 
 
   
	  
	 
 
		   
		   
		   
			  
				| Argument Type | Function Type | 
 
		  
 
		   
			  
				| All arguments integer | Integer | 
 
			  
				| Numeric | Numeric | 
 
			  
				| (some arguments may be integer) |  | 
 
		  
 
		
 
 
   
 
  General Format
 
	  
	  
 
  Arguments
 
	   
	 - Argument-1 must be class numeric. 
	 
Returned Values
 
	   
	 - The returned value is the sum of the arguments. 
	 
- If the argument-1 series are all integers, the value returned is an integer. 
	 
- If the argument-1 series are not all integers, a numeric value is returned in floating-point format.