  | #### D.16.2.14 isCanonical `Syntax:` `Polymake::isCanonical(` polytope p `)` `Type:` int `Purpose:` 1 if p has exactly one interior lattice point, 0 otherwise. `Example:`
        LIB"polymake.lib";
        intmat M[6][4]=1,1,1,2, 1,-1,-1,-2, 1,1,0,0, 1,-1,0,0, 1,0,1,0, 1,0,-1,0;
        polytope p = polytopeViaPoints(M);
        Polymake::isCanonical(p);
        Polymake::isReflexive(p);
        intmat N[3][3]=1,2,0, 1,0,2, 1,-2,-2;
        polytope q = polytopeViaPoints(N);
        Polymake::isCanonical(q);

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