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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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 * [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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#ifndef UTILS_NUMERICCONSTANT_HPP | 
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#define UTILS_NUMERICCONSTANT_HPP | 
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#include "config.h" | 
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#include <cmath> | 
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#include <limits> | 
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#include "config.h" | 
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namespace OpenMD { | 
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  /** | 
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    static const RealType epsilon = std::numeric_limits<RealType>::epsilon(); | 
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    static const RealType PI = M_PI; | 
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    static const RealType TWO_PI = 2.0 * PI; | 
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    static const RealType infinity = std::numeric_limits<RealType>::infinity(); | 
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  } | 
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