ZPL Language Reference Manual

Calvin Lin

Dept. of Computer Sciences
The University of Texas at Austin
Austin, TX 78712

Version 1.0
October 17, 1996

• Contents
• Introduction
• Lexical Issues
  • Comments
  • White Space
  • Case-Sensitivity
  • Tokens
    • Identifiers
    • Keywords
    • Constants
      • Named Constants.
    • Operators
    • Separators
• Data Types
  • Base Types
  • Enumerated Types
  • Derived Types
    • Records
    • Parallel Arrays
    • Indexed Arrays
  • Directions
  • Regions
    • Derived Regions
    • Region Scope Rules
    • Restrictions on Regions
    • Dynamic Regions
    • Floodable Regions
  • Type Conversion
  • Arrays
    • Sequential vs. Parallel Variables
    • Floodable Arrays
• Variables
  • Special Variables
    • Config Variables
    • ``Index'' Arrays
  • Declarations
    • Scope Rules
    • Declaring Degenerate Dimensions
    • Rank Defined Arrays
    • Implicit Storage for Parallel Variables
    • Procedure Prototypes
  • Initializing Variables
• Expressions and Operators
  • Unary Operators
    • Unary Plus and Minus
    • Logical Negation
  • Reductions and Scans
    • Partial Scans.
    • Partial Reductions.
    • Floods.
  • Binary Operators
    • Arithmetic Operators
    • Relational Operators
    • Logical Operators
    • The At Operator
    • Mask Operators
    • Region Operators
      • The Of Operator.
      • The In Operator.
      • The At Operator.
  • Procedure Calls
  • L-Values
• Sequential and Parallel Variables
  • Operations on Whole Indexed Arrays.
  • Promotion
    • Parameter Promotion
    • Procedure Promotion
• Statements
  • Assignment Statements
  • Compound Statements
    • Unconditional Control Flow
    • Conditional Control Flow
    • Iterative Control Flow
    • Shattered Control Flow
      • Masks vs. Shattered Control Flow.
  • Wrap and Reflect
  • Input and Output
    • Open and Close
    • Read and Write
    • Control Strings
    • Customized I/O Routines
    • Caveats
  • Procedures
    • Value-returning Procedures.
    • Parallel vs. Sequential Procedures.
    • Rank-defined Arrays.
    • Promoted Procedures.
    • Promoted Return Values.
    • The Standard Context
      • I/O Routines.
      • Mathematical Routines.
      • Type Conversion Routines.
      • Timing Routines.
• Program Structure
  • The ZPL Module
  • External Procedures
• The Compiler and Runtime System
  • Compiler Flags
  • Runtime Flags
• ZPL Syntax
• Standard Context
• Index
• About this document ...