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-rw-r--r--src/gr/Jacobian.hh4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gr/Jacobian.hh b/src/gr/Jacobian.hh
index 626d080..e49187a 100644
--- a/src/gr/Jacobian.hh
+++ b/src/gr/Jacobian.hh
@@ -17,6 +17,10 @@
class Jacobian
{
public:
+ // basic meta-info
+ patch_system& my_patch_system();
+
+public:
// access a matrix element
virtual const fp& operator()(int II, int JJ) const; // rvalue
virtual fp& operator()(int II, int JJ) const; // lvalue