Method solution

test/float/transcendental.cpp:138–142

%Test whether \a x is solution

       : Test("Transcendental::Log::XY::Sol::"+s,2,d,st,EXTEND_ASSIGNMENT,false) {}
       /// %Test whether \a x is solution
       virtual MaybeType solution(const Assignment& x) const {
         if (x[0].max() < 0.0)
           return MT_FALSE;
         return eq(log(x[0]), x[1]);
       }
       /// Extend assignment \a x
       virtual bool extendAssignment(Assignment& x) const {
         if (x[0].max() < 0.0) return false;