floor.hpp

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#ifndef __STAN__AGRAD__REV__FLOOR_HPP__
#define __STAN__AGRAD__REV__FLOOR_HPP__

#include <cmath>
#include <stan/agrad/rev/var.hpp>
#include <stan/agrad/rev/op/v_vari.hpp>

namespace stan {
  namespace agrad {

    namespace {
      class floor_vari : public vari {
      public:
        floor_vari(vari* avi) :
          vari(std::floor(avi->val_)) {
        }
      };
    }
    
    inline var floor(const var& a) {
      return var(new floor_vari(a.vi_));
    }

  }
}
#endif