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This document describes the C and C++ programming interface used to read and write Cadence® Library Exchange Format (LEF) files. You should be an experienced C++ or C programmer and be familiar with LEF file structure to read this manual.
For information on what is new or changed in the LEF programming interface for version 5.8, see What's New in LEF C/C++ Programming Interface.
For information on what is new or changed in the DEF programming interface for version 5.8, see What's New in DEF C/C++ Programming Interface.
For information on what is new or changed in LEF and DEF for version 5.8, see What's New in LEF/DEF.
The LEF C/C++ programming interface lets you create programs that read and write LEF files. For more information about the Design Exchange Format (DEF) file syntax, see the
LEF/DEF Language Reference.
This list describes the conventions used in this manual.
Words in monospace type indicate keywords that you must enter literally. These keywords represent language tokens.
Words in italics indicate user-defined information for which you must substitute a name or a value.
Specifies an integer argument
Some LEF classes can be defined more than once. A statement that begins with the identifier num represents a specific number of calls to the particular class type.
Braces enclose each entire LEF class definition.
Vertical bars separate possible choices for a single argument. They take precedence over any other character.
Brackets denote optional arguments. When used with vertical bars, they enclose a list of choices from which you can choose one.