Transcription of AMPL Reference Manual
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A_____AMPL Reference ManualAMPLis a language for algebraic modeling and mathematical programming: a computer-readable language for expressing optimization problems such as linear programming in algebraicnotation. This appendix summarizes the features ofAMPL, with particular emphasis on technicaldetails not fully covered in the preceding chapters. Nevertheless, not every feature, construct, andoption is listed; theAMPLweb the most up to date and following notational conventions are used. Literal text is printed inconstant widthfont, while syntactic categories are printed initalic or subphrases enclosed inslanted square brackets[and]are optional, as are constructs with the Lexical rulesAMPL models involve variables, constraints, and objectives, expressed with the help of sets andparameters.
ing the three charactersx’y. Newline characters may appear within a literal only if preceded by\. The choice of delimiter is arbitrary;’abc’and "abc"denote the same literal. Literals are distinct from numeric constants:1and ’1’are unrelated. Input is free form; white space (any sequence of space, tab or newline characters) may appear
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