18 #include "../geometric.hpp"    19 #include "../exponential.hpp"    20 #include "../ext/vector_relational.hpp"    22 #if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)    23 #   pragma message("GLM: GLM_EXT_quaternion_geometric extension included")    37     template<
typename T, qualifier Q>
    38     GLM_FUNC_DECL T 
length(qua<T, Q> 
const& q);
    46     template<
typename T, qualifier Q>
    47     GLM_FUNC_DECL qua<T, Q> 
normalize(qua<T, Q> 
const& q);
    55     template<
typename T, qualifier Q>
    56     GLM_FUNC_DECL T 
dot(qua<T, Q> 
const& x, qua<T, Q> 
const& y);
    64     template<
typename T, qualifier Q>
    65     GLM_FUNC_QUALIFIER qua<T, Q> 
cross(qua<T, Q> 
const& q1, qua<T, Q> 
const& q2);
    70 #include "quaternion_geometric.inl" GLM_FUNC_DECL T dot(qua< T, Q > const &x, qua< T, Q > const &y)
Returns dot product of q1 and q2, i.e., q1[0] * q2[0] + q1[1] * q2[1] + ... 
GLM_FUNC_DECL qua< T, Q > normalize(qua< T, Q > const &q)
Returns the normalized quaternion. 
GLM_FUNC_QUALIFIER qua< T, Q > cross(qua< T, Q > const &q1, qua< T, Q > const &q2)
Compute a cross product. 
GLM_FUNC_DECL T length(qua< T, Q > const &q)
Returns the norm of a quaternions.