OSI/AS Programming Manual

Procedure Call Descriptions

APS Procedure Calls

056783 Tandem Computers Incorporated 3–5

Figure 3-1. Sample APS Procedure Call Description (Page 2 of 2)

This line indicates whether the parameter is an input or an output parameter

(or both).

This line indicates the parameter type, which begins with one of the following:

INT integer (one word)

INT(32) doubleword integer (two words)

Next, the following notation can appear:

.EXT means that the parameter is a reference parameter

accessed by an extended pointer.

For all parameters except returned values, the parameter type (and the .EXT, i

present) is followed by a colon. Additional information after the colon includes:

value means that the actual value or contents of a parameter are

passed.

ref:1 means this is a reference parameter; that is, the address of

the parameter is passed. (The statements within the

program body must access the actual parameter contents

indirectly through the parameter location.) "1" indicates that

the parameter contains one element.

ref:(ddlname)

means that that this is a reference parameter and that the

information will be accessed at the address with the

ddlname shown.

ref:* means that this is a reference parameter; the number of

elements returned varies according to the number of

elements requested.

This line describes the information passed or returned in the parameter.

080

The exclamation point indicates that a comment follows. The comment

is either an “I” or an “O” (or both), indicating that the parameter is either

an input (I) or an output (O) parameter (or both). Input parameters are

those passing data to the called procedure; output parameters are

those that return data to the calling program.