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 *                                                                       | 
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 * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).              | 
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 * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).           | 
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< | 
 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).           | 
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 * [4]  Vardeman & Gezelter, in progress (2009).                         | 
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> | 
 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 234107 (2008).           | 
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> | 
 * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010). | 
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> | 
 * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). | 
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 */ | 
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  | 
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  public: | 
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    ConstraintPair(ConstraintElem* elem1, ConstraintElem* elem2, RealType len)  | 
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      : consElem1_(elem1), consElem2_(elem2), dist2(len*len) { } | 
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    ConstraintPair(ConstraintElem* elem1, ConstraintElem* elem2,  | 
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                   RealType len, bool printForce)  | 
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      : consElem1_(elem1), consElem2_(elem2), dist2(len*len),  | 
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        printForce_(printForce) { } | 
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    ~ConstraintPair() { | 
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      delete consElem1_; | 
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    bool isMoved() { return consElem1_->getMoved() || consElem2_->getMoved(); }         | 
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    RealType getConsDistSquare() {return dist2;} | 
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    void setConstraintForce(RealType frc) { force_ = frc; } | 
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    RealType getConstraintForce() { return force_; } | 
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    bool getPrintForce() {return printForce_;} | 
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  private: | 
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    ConstraintElem* consElem1_; | 
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    ConstraintElem* consElem2_;         | 
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    RealType dist2; | 
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    RealType force_; | 
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    bool printForce_; | 
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  }; | 
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} |