Method solution

test/float/transcendental.cpp:101–103

%Test whether \a x is solution

         : Test("Transcendental::Exp::XX::"+s,1,d,st,CPLT_ASSIGNMENT,false) {}
       /// %Test whether \a x is solution
       virtual MaybeType solution(const Assignment& x) const {
         return eq(exp(x[0]), x[0]);
       }
       /// Post constraint on \a x
       virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
         Gecode::exp(home, x[0], x[0]);