pTAL Conversion Guide

Contents

pTAL Conversion Guide—527302-002

12. Equivalenced Variables (continued)

Declaring Equivalenced Variables 12-8

Considerations 12-8

Equivalencing Standard Pointers to Indirect Items 12-9

Equivalencing Extended Pointers to Extended Items 12-10

Equivalenced Variable Must Fit Within Previous Variable 12-11

Declaring Structures in Equivalenced Declarations 12-12

Declaring Pointers in Equivalenced Declarations 12-13

Equivalencing PROCADDRs and PROCPTRs 12-14

Using Structure Variants 12-15

Using a REFALIGNED Clause With Equivalenced Declarations 12-16

Using the FIELDALIGN Clause 12-17

Declaring Address-Based Equivalenced Variables 12-17

TAL 12-17

pTAL 12-18

Using Equivalenced Variables 12-18

13. Expressions

Using 16-bit Operands and Operations 13-1

Using 16-bit Operators 13-1

Results After Overflow 13-2

Guaranteeing 16-Bit Results 13-3

Using Unsigned Operators and INT(32) Operands 13-4

Using INT(32) Operands With Logical Operators 13-4

Using INT(32) Operands With Unsigned Comparison Operators 13-5

Using INT(32) Operands With Unsigned Add and Subtraction Operators 13-5

Using INT(32) Operands With the Unsigned Multiplication Operator 13-5

Using INT(32) Operands With the Unsigned Division and Remainder

Operators 13-5

Comparing Addresses 13-6

Comparing Extended Addresses 13-6

Comparing Nonextended Addresses 13-7

Using Indexing 13-8

TAL 13-8

pTAL 13-8

Using FIXED(*) Variables 13-9

Relational Operators and Condition Codes 13-10

TAL 13-10

pTAL 13-10