Method solution

test/float/transcendental.cpp:186–190

%Test whether \a x is solution

       : Test("Transcendental::Log::N::"+str(_base)+"::XY::"+s,2,d,st,CPLT_ASSIGNMENT,false), base(_base) {}
       /// %Test whether \a x is solution
       virtual MaybeType solution(const Assignment& x) const {
         if ((x[0].max() <= 0.0) || (base <= 0.0))
           return MT_FALSE;
         return eq(log(x[0]) / log(base), x[1]);
       }
       /// Post constraint on \a x
       virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
         Gecode::log(home, base, x[0], x[1]);