Method solution

test/float/arithmetic.cpp:495–499

%Test whether \a x is solution

       : Test("Arithmetic::NRoot::N::"+str(_n)+"::XX::"+s,1,d,st,CPLT_ASSIGNMENT,false) {}
       /// %Test whether \a x is solution
       virtual MaybeType solution(const Assignment& x) const {
         if ((n == 0) || (x[0].max() < 0))
           return MT_FALSE;
         return eq(nroot(x[0],n), x[0]);
       }
       /// Post constraint on \a x
       virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
         Gecode::nroot(home, x[0], n, x[0]);