From cc6121b98d16d567580743ac54d4809124b2b29c Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 20 Nov 2008 10:47:12 +0000
Subject: tutorial: add the cast function

---
 doc/QuickStartGuide.dox | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'doc/QuickStartGuide.dox')

diff --git a/doc/QuickStartGuide.dox b/doc/QuickStartGuide.dox
index c48e153cf..25bbf4632 100644
--- a/doc/QuickStartGuide.dox
+++ b/doc/QuickStartGuide.dox
@@ -188,6 +188,15 @@ v = 6 6 6
 </td></tr></table>
 
 
+\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:
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