NIntegrator.hh

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#pragma once
 
#include "Storage.hh"
#include "Compare.hh"
#include "Exceptions.hh"
#include "NTensor.hh"
#include "NEvaluator.hh"
 
namespace cadabra {
 
    
    class NIntegrator {
        public:
            // Initialise with an Ex subtree containing the integrand.
            NIntegrator(Ex::iterator);
 
            // Set integration range.
            void set_range(const Ex&, double from, double to);
            
            // Entry point.
            std::complex<double> integrate();
 
            // Object to evaluate the expression. Users of `NIntegrator`
            // can set values for variables in this evaluator.
            NEvaluator evaluator;
            
        private:
            Ex::iterator integrand;
         Ex           ivar;
            double       range_from, range_to;
};
    
};