Kednos PL/I for OpenVMS Systems
Reference Manual

Chapter 5
5	Storage Classes
5.1	Automatic Variables
5.2	Static Variables
5.3	Internal Variables
5.4	External Variables
5.5	Based Variables
5.5.1	Data Types Used with Based Variables
5.5.2	Allocation in Areas
5.5.3	Referring to Based Variables
5.5.4	Based Variables and Dynamic Storage Allocation
5.5.5	Using the ADDR Built-in Function
5.5.6	Data-Type Matching for Based Variables
5.5.6.1	Matching by Overlay Defining
5.5.6.2	Matching by Left-to-Right Equivalence
5.5.6.3	Nonmatching Based Variable References
5.5.7	Examples of Based Variables
5.6	Controlled Variables
5.6.1	Using the ALLOCATION Built-In Function
5.6.2	Using the ADDR Built-In Function
5.7	Dynamically Allocated Variables
5.7.1	ALLOCATE Statement
5.7.2	FREE Statement
5.7.3	Other Mechanisms for Dynamic Storage Allocation
5.8	Defined Variables
5.8.1	String Overlay Defining
5.8.2	Rules for Overlay Defining
5.9	Storage Sharing
Chapter 6
6	Expressions and Data Type Conversions
6.1	Assignment Statement
6.2	Operators and Operands
6.2.1	Arithmetic Operators
6.2.2	Logical Operators
6.2.2.1	NOT
6.2.2.2	AND
6.2.2.3	OR
6.2.2.4	EXCLUSIVE OR
6.2.2.5	AND THEN
6.2.2.6	OR ELSE
6.2.3	Relational Operators
6.2.3.1	Arithmetic Comparisons
6.2.3.2	Bit-String Comparisons
6.2.3.3	Character-String Comparisons
6.2.3.4	Comparing Noncomputational Data
6.2.4	Concatenation Operator
6.3	Precedence of Operators and Expression Evaluation
6.4	Data Type Conversion of Operands and Expressions
6.4.1	Contexts in which PL/I Converts Data
6.4.2	Derived Data Types for Arithmetic Operations
6.4.3	Conversion of Operands in Nonarithmetic Operations
6.4.4	Built-In Conversion Functions
6.4.5	Implicit Conversion During Assignment
6.4.6	Assignment to Arithmetic Variables
6.4.6.1	Arithmetic to Arithmetic Conversions
6.4.6.1.1	Conversions to Fixed Point
6.4.6.1.2	Conversions to Floating Point
6.4.6.1.3	Conversions from FIXED BINARY to Other Data Types
6.4.6.2	Pictured to Arithmetic Conversions
6.4.6.3	Bit-String to Arithmetic Conversions
6.4.6.4	Character-String to Arithmetic Conversions
6.4.7	Assignments to Bit-String Variables
6.4.7.1	Arithmetic to Bit-String Assignments
6.4.7.2	Pictured to Bit-String Conversions
6.4.7.3	Character-String to Bit-String Conversions
6.4.8	Assignments to Character-String Variables
6.4.8.1	Arithmetic to Character-String Conversions
6.4.8.1.1	Conversion from Fixed-Point Binary or Fixed-Point Decimal
6.4.8.1.2	Conversion from Floating-Point Binary or Floating-Point Decimal
6.4.8.2	Pictured to Character-String Conversion
6.4.8.3	Bit-String to Character-String Conversion
6.4.9	Assignments to Pictured Variables
6.4.10	Conversions Between Offsets and Pointers
Chapter 7
7	Procedures
7.1	PROCEDURE Statement
7.2	Functions and Function References
7.3	ENTRY Statement
7.3.1	Specifying Entry Points
7.3.2	Multiple Entry Points
7.4	CALL Statement
7.5	Parameters and Arguments
7.5.1	Rules for Specifying Parameters
7.5.2	Argument Passing
7.6	Calling External and Internal Procedures
7.7	Terminating Procedures
7.8	Passing Arguments to Non-PL/I Procedures
7.8.1	Passing Arguments by Immediate Value
7.8.2	Passing Arguments by Reference
7.8.3	Passing Arguments by Descriptor