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| template<typename genType >  | 
| GLM_FUNC_DECL genType::value_type  | noise1 (genType const &x) | 
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| template<typename genType >  | 
| GLM_FUNC_DECL tvec2< typename genType::value_type, defaultp >  | noise2 (genType const &x) | 
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| template<typename genType >  | 
| GLM_FUNC_DECL tvec3< typename genType::value_type, defaultp >  | noise3 (genType const &x) | 
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| template<typename genType >  | 
| GLM_FUNC_DECL tvec4< typename genType::value_type, defaultp >  | noise4 (genType const &x) | 
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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. 
      
        
          | GLM_FUNC_DECL genType::value_type glm::noise1  | 
          ( | 
          genType const &  | 
          x | ) | 
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          | GLM_FUNC_DECL tvec2<typename genType::value_type, defaultp> glm::noise2  | 
          ( | 
          genType const &  | 
          x | ) | 
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          | GLM_FUNC_DECL tvec3<typename genType::value_type, defaultp> glm::noise3  | 
          ( | 
          genType const &  | 
          x | ) | 
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          | GLM_FUNC_DECL tvec4<typename genType::value_type, defaultp> glm::noise4  | 
          ( | 
          genType const &  | 
          x | ) | 
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