C/C++ Programmer's Guide (G06.25+)

Contents

HP C/C++ Programmer’s Guide for NonStop Systems—429301-008

7. Mixed-Language Programming for TNS

Programs (continued)

7. Mixed-Language Programming for TNS Programs (continued)

Interfacing to TAL (continued)

TAL Procedures That You Cannot Directly Call 7-12

Sharing Data 7-13

Variables and Parameters 7-17

Extended Data Segments 7-27

Interfacing to TNS COBOL 7-30

8. Mixed-Language Programming for TNS/R and TNS/E Native

Programs

Introducing the CRE 8-2

Using Standard Files in Mixed-language Programs 8-2

Declaring External Routines 8-2

Writing Interface Declarations 8-3

Using a Function Prototype and a FUNCTION Pragma 8-3

Using an Interface Declaration 8-3

Usage Guidelines 8-4

Examples 8-5

Considerations When Interfacing to pTAL 8-6

Using Identifiers 8-7

Matching Data Types 8-7

Calling C Routines From pTAL Modules 8-8

C Routines That You Cannot Call Directly 8-9

Calling pTAL Routines From C Modules 8-9

pTAL Procedures That You Cannot Call Directly 8-10

Sharing Data 8-12

Parameters and Variables

8-17

Differences Between Native and TNS Mixed-Language Programs

8-24

Data Models 8-25

Memory Models 8-25

_far Pointer Qualifier 8-25

Extended Data Segments 8-25

Interfacing to Native COBOL 8-26

9. System-Level Programming

Specifying a Code Space 9-1

Passing Pointers to Constants Between Code Spaces 9-2