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tutorial: add the cast function

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Gael Guennebaud 2008-11-20 10:47:12 +00:00
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doc/QuickStartGuide.dox
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@ -188,6 +188,15 @@ v = 6 6 6
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\subsection TutorialCasting Casting
In Eigen, any matrices of same size and same scalar type are all naturally compatible. The scalar type can be explicitely casted to another one using the template cast() function:
\code
Matrix3d md(1,2,3);
Matrix3f mf = md.cast<float>();
\endcode
Note that casting to the same scalar type in an expression is free.
\subsection TutorialMap Map
Any memory buffer can be mapped as an Eigen expression: