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Utilities

Perleval Preprocessor

Perleval is a Perl script which allows one to define and use symbolic names in the LSP input file. Variable names must begin with a `$' character, and expressions (including single variables) are enclosed in curly brackets `{}'. Variables may be defined in a comment section at the top of the input file, and then expressions using these variables may appear anywhere within the input file. Essentially the same capability is built into the GLSP preprocessor (see section GLSP Preprocessor), which uses the Tcl expression evaluator. There are some syntax differences due to the differences between Perl and Tcl expressions (e.g., the exponentiation operator is `**' in Perl and `pow' in Tcl.)

Renumber Utility

Various keywords in the LSP input file, such as object and probe, have integers appended to them. The integer provides identification for the associated item, but makes it inconvenient to insert new items, since subsequent items must then be renumbered. The `renumber' utility automates renumbering to renumber the probes in the file `input.lsp', type

renumber probe input.lsp

The GLSP preprocessor (see section GLSP Preprocessor) does automatic renumbering.


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