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| template<typename genType >  | 
| genType::value_type  | noise1 (genType const &x) | 
|   | 
| template<typename genType >  | 
detail::tvec2< typename  
genType::value_type >  | noise2 (genType const &x) | 
|   | 
| template<typename genType >  | 
detail::tvec3< typename  
genType::value_type >  | noise3 (genType const &x) | 
|   | 
| template<typename genType >  | 
detail::tvec4< typename  
genType::value_type >  | noise4 (genType const &x) | 
|   | 
Noise functions are stochastic functions that can be used to increase visual complexity. 
Values returned by the following noise functions give the appearance of randomness, but are not truly random. 
      
        
          | genType::value_type glm::noise1  | 
          ( | 
          genType const &  | 
          x | ) | 
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          | detail::tvec2<typename genType::value_type> glm::noise2  | 
          ( | 
          genType const &  | 
          x | ) | 
           | 
        
      
 
 
      
        
          | detail::tvec3<typename genType::value_type> glm::noise3  | 
          ( | 
          genType const &  | 
          x | ) | 
           | 
        
      
 
 
      
        
          | detail::tvec4<typename genType::value_type> glm::noise4  | 
          ( | 
          genType const &  | 
          x | ) | 
           |