Functions and CALL Routines

PEEKLONG Function

Stores the contents of a memory address in a numeric variable on 32-bit and 64-bit platforms.

Category:	Special
See:	PEEKLONG Function under Windows UNIX OpenVMS z/OS

Syntax
Arguments
Details
Comparisons
Examples
	Example 1: Example for a 32-bit Platform
	Example 2: Example for a 64-bit Platform
See Also

Syntax

PEEKLONG(address<,length>)

Arguments

address

specifies a character constant, variable, or expression that contains the binary pointer address.

length

is a numeric constant, variable, or expression that specifies the length of the character data.

Default:	4 on 32-bit computers; 8 on 64-bit computers.
Range:	1-4 on 32-bit computers; 1-8 on 64-bit computers.

Details

If you do not have access to the memory storage location that you are requesting, the PEEKLONG function returns an "Invalid argument" error.

Comparisons

The PEEKLONG function stores the contents of a memory address in a numeric variable. It assumes that the input address refers to an integer in memory.

The PEEKCLONG function stores the contents of a memory address in a character variable. It assumes that the input address refers to character data.

Examples

Example 1: Example for a 32-bit Platform

The following example returns the pointer address for the numeric variable Z.

data _null_;    
   length y $4; 
   y=put(1,IB4.);    
   addry=addrlong(y);
   z=peeklong(addry,4);
   put z=; 
run;

The output from the SAS log is: z=1

Example 2: Example for a 64-bit Platform

The following example, specific to the z/OS operating environment, returns the pointer address for the numeric variable X.

data _null_;
   x=peeklong(put(16,pib4.));
   put x=hex8.;
run;

The output from the SAS log is: x=00FCFCB0