introduce negate() macro for propositional logic #335
Merged
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The idea of this pull request is to provide a function negate() to print the negation symbol in formulas of propositional logic. The motivation was the observation that some problems in the OPL use "\sim" for negation, while others use "\lnot" or "\neg". I think it would be nice to have this configurable, similarly as the macros in
macros/UMass-Amherst/algebraMacros.pl
.