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| template<typename T >  | 
| const T  | epsilon = glm:: epsilon <T>() | 
|   | Return the epsilon constant for floating point types.  
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| template<typename T >  | 
| const T  | _0 = glm:: zero <T>() | 
|   | Return 0.  
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| template<typename T >  | 
| const T  | _1 = glm:: one <T>() | 
|   | Return 1.  
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| template<typename T >  | 
| const T  | pi = glm:: pi <T>() | 
|   | Return the pi constant.  
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| template<typename T >  | 
| const T  | _2pi = glm:: two_pi <T>() | 
|   | Return pi///2.  
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| template<typename T >  | 
| const T  | sqrtPi = glm:: root_pi <T>() | 
|   | Return square root of pi.  
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| template<typename T >  | 
| const T  | pi_2 = glm:: half_pi <T>() | 
|   | Return pi / 2.  
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| template<typename T >  | 
| const T  | _3pi_2 = glm:: three_over_two_pi <T>() | 
|   | Return pi / 2///3.  
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| template<typename T >  | 
| const T  | pi_4 = glm:: quarter_pi <T>() | 
|   | Return pi / 4.  
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| template<typename T >  | 
| const T  | _1_pi = glm:: one_over_pi <T>() | 
|   | Return 1 / pi.  
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| template<typename T >  | 
| const T  | _1_2pi = glm:: one_over_two_pi <T>() | 
|   | Return 1 / (pi///2).  
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| template<typename T >  | 
| const T  | _2_pi = glm:: two_over_pi <T>() | 
|   | Return 2 / pi.  
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| template<typename T >  | 
| const T  | _4_pi = glm:: four_over_pi <T>() | 
|   | Return 4 / pi.  
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| template<typename T >  | 
| const T  | _2_sqrtpi = glm:: two_over_root_pi <T>() | 
|   | Return 2 / sqrt(pi).  
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| template<typename T >  | 
| const T  | _1_sqrt2 = glm:: one_over_root_two <T>() | 
|   | Return 1 / sqrt(2).  
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| template<typename T >  | 
| const T  | sqrt_pi_2 = glm:: root_half_pi <T>() | 
|   | Return sqrt(pi / 2).  
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| template<typename T >  | 
| const T  | sqrt_2pi = glm:: root_two_pi <T>() | 
|   | Return sqrt(2///pi).  
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| template<typename T >  | 
| const T  | e = glm:: e <T>() | 
|   | Return e constant.  
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| template<typename T >  | 
| const T  | euler = glm:: euler <T>() | 
|   | Return Euler's constant.  
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| template<typename T >  | 
| const T  | sqrt2 = glm:: root_two <T>() | 
|   | Return sqrt(2).  
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| template<typename T >  | 
| const T  | sqrt3 = glm:: root_three <T>() | 
|   | Return sqrt(3).  
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| template<typename T >  | 
| const T  | sqrt5 = glm:: root_five <T>() | 
|   | Return sqrt(5).  
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| template<typename T >  | 
| const T  | goldenRatio = glm:: golden_ratio <T>() | 
|   | Return the golden ratio constant.  
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