Purpose
 
		 
		 Equivalent to POINTERADD(x,-y). 
		
 
	 Syntax
 
		 
		POINTERSUBTRACT(x,y)
 
		Abbreviation(s): PTRSUBTRACT for POINTERSUBTRACT. 
	 Parameters
 
		 
		 
		   
			 - x 
			 
- A pointer expression. 
			 
 
		   
			 - y 
			 
- Expression that has a computational type and is converted to FIXED BINARY(31,0). 
			 
Description
 
		 
		POINTERSUBTRACT is equivalent to POINTERADD(x,-y). It can be abbreviated as PTRSUBTRACT.