From 379e36f949dbfa2dfaeaa1375593e97bb76b51c3 Mon Sep 17 00:00:00 2001
From: Van Dung Nguyen <vandung.nguyen@ulg.ac.be>
Date: Wed, 24 Dec 2014 10:08:37 +0000
Subject: [PATCH] add dev
---
Geo/STensor3.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Geo/STensor3.h b/Geo/STensor3.h
index 220fde14df..11cf2f040d 100644
--- a/Geo/STensor3.h
+++ b/Geo/STensor3.h
@@ -350,6 +350,14 @@ class STensor3 {
}
return sqrt(sqr);
}
+ STensor3 dev() const{
+ double p= trace()/3.;
+ STensor3 de(*this);
+ de(0,0) -= p;
+ de(1,1) -= p;
+ de(2,2) -= p;
+ return de;
+ }
};
// tensor product
--
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