RTNCODE-SIZE

Specifies the size of the RETURN-CODE special register and its alignment in memory.

Syntax:

>>-.---.--RTNCODE-SIZE--"integer"----------><
   +-/-+

Parameters:

integer

One of:

2: PIC S9(4) COMP: size 2 bytes, aligned on a two-byte boundary.
4: PIC S9(9) COMP: size 4 bytes, aligned on a four-byte boundary.
8: PIC S9(18) COMP: size 8 bytes, aligned on an eight-byte boundary.

Properties:

Default:	RTNCODE-SIZE"4"
Phase:	Syntax check
$SET:	Initial

Dependencies:

Set to RTNCODE-SIZE"4" immediately by XOPEN.

Set to RTNCODE-SIZE"8" immediately by P64.

If a program calls a program with a smaller RETURN-CODE set, on return the value from the called program is in the lower bytes of the RETURN-CODE, with the other bytes undefined. For example, if a program with a 4-byte RETURN-CODE calls a program with a 2-byte RETURN-CODE, the lower two bytes of the 8-byte RETURN-CODE are set, while the content of the other bytes is undefined.

If a program calls a program with a larger RETURN-CODE set, on return the lower bytes of the value from the called program are in the RETURN-CODE, with the content of the upper bytes lost. For example, if a program with a 4-byte RETURN-CODE calls a program with an 8-byte RETURN-CODE, the lower four bytes of the 8-byte RETURN-CODE are set, while the content of the other bytes is lost.