HP 3000 Manuals HP 3000 Manuals
Table of Contents SPL to HP C/XL Migration Guide SPL to HP C/XL Migration Guide : COPYRIGHT NOTICE SPL Migration Migration Choices Converting SPL to HP C/XL Conversion Strategy Major Considerations Program Structure Introduction Conventions Source Program Format Delimiters Comments Program and Subprogram Structure Hardware Concepts Code and Data Segments Procedures Subroutines Intrinsics Compound Statements Entry Points Basic Elements Data Storage Formats Constant Types Identifiers Arrays Pointers Labels Switches Global Data Declarations Types of Declarations Simple Variable Declarations ARRAY Declaration POINTER Declaration LABEL Declaration SWITCH Declaration ENTRY Declaration DEFINE Declaration and Reference EQUATE Declaration and Reference DATASEG Declaration and Reference Expressions, Assignments, and Scan Statements Expression Types Variables Function Designator Bit Operations Arithmetic Expressions Logical Expressions Condition Clauses IF Expressions Assignment Statement MOVE Statement MOVEX Statement SCAN Statement Program Control Statements Program Control GO TO Statement DO Statement WHILE Statement FOR Statement IF Statement CASE Statement Procedure Call Statement Subroutine Call Statement RETURN Statement Machine Level Constructs ASSEMBLE Statement DELETE, PUSH, SET, and WITH Statements Procedures, Intrinsics, and Subroutines Subprogram Units PROCEDURE Declaration Local Declarations Local LABEL Declarations Local SWITCH Declarations Local ENTRY Declaration Local DEFINE Declaration and Reference Local EQUATE Declaration and Reference Procedure Body INTRINSIC Declarations SUBROUTINE Declaration Input/Output Introduction to Input/Output Opening a New Disk File Reading a File in Sequential Order Writing Records into a File in Sequential Order Updating a File Numeric Data Input/Output File Equations Compiler and MPE Commands Compiler Format Use and Format of Compiler Commands $CONTROL Command $IF Command (Conditional Compilation) $SET Command (Software Switches for Conditional Compilation) $TITLE Command (Page Title in Standard Listing) $PAGE Command (Page Title And Ejection) $EDIT Command (Source Text Merging and Editing) $SPLIT/$NOSPLIT Commands $COPYRIGHT Command Cross Reference Listing $INCLUDE Command MPE Commands Step-By-Step SPL to HP C/XL Conversion Step One: Remove Hardware Dependencies Step Two: Rewrite SPL to Look Like HP C/XL Step Three: Convert the Source to HP C/XL Step Four: Improve the Translated Source SPL Procedures to Replace Special Features SPL BCONCAT Procedure: Bit Concatenation SPL BDEPOSIT Procedure: Bit Deposit SPL BEXTRACT Procedure: Bit Extraction SPL BYTECMP Procedure: Byte Comparison HP C/XL Functions to Emulate SPL Operations HP C/XL BCONCAT Function: Bit Concatenation HP C/XL BDEPOSIT Function: Bit Deposit HP C/XL BEXTRACT Macro and Function: Bit Extraction HP C/XL BYTECMP Function: Byte Comparison HP C/XL MOVEB Function: Move Bytes HP C/XL MOVEBW Function: Move Bytes While HP C/XL MOVESB Function: Move String Bytes HP C/XL MOVEW Function: Move Words HP C/XL SCANU Function: Scan Until HP C/XL SCANW Function: Scan While HP C/XL Bit Shift Macros and Functions