Examples with BDDCNFTransformation org.logicng.transformations.cnf.BDDCNFTransformation used on opensource projects

Example 1 with BDDCNFTransformation

use of org.logicng.transformations.cnf.BDDCNFTransformation in project symja_android_library by axkr.

the class BooleanFunctions method transformation.

/**
 * Get the transformation from the ast options. Default is DNF.
 *
 * @param ast
 * @param engine
 * @return <code>null</code> if no or wrong method is defined as option
 */
private static FormulaTransformation transformation(final IAST ast, EvalEngine engine) {
    int size = ast.argSize();
    if (size > 1 && ast.get(size).isString()) {
        IStringX lastArg = (IStringX) ast.get(size);
        String method = lastArg.toString();
        if (method.equals("DNF") || method.equals("SOP")) {
            return new DNFFactorization();
        } else if (method.equals("CNF") || method.equals("POS")) {
            // don't use CNFFactorization, because of bad memory space complexity
            return new BDDCNFTransformation();
        }
        // `1` currently not supported in `2`.
        IOFunctions.printMessage(ast.topHead(), "unsupported", F.list(lastArg, S.Method), engine);
        return null;
    }
    return new DNFFactorization();
}