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* Introduce a boolean parameter to switch of SBP near outer boundary. Insteaddiener2009-03-31
| | | | | | | | switch to progressively lower order centered stencil as the boundery is approached, similar to what is done with the second order and upwind stencils. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@118 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Add non-sbp upwinding operators. These have the same order as the centereddiener2008-05-08
| | | | | | | operators but does not satisfy any SBP property. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@114 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Add stencils for non-SBP operators.diener2008-04-18
| | | | git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@104 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Add 8-4 second derivative operators.diener2007-10-31
| | | | git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@93 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Added 6-3 minimal bandwidth 2nd derivative operators. Added 4-2 minimaldiener2007-10-19
| | | | | | | | bandwidth 2nd derivative operators. Moved the 4-2 optimised operators. Fixed missing break statements get_up_coeffs.c. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@89 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* The second derivative in the 4-2 case is not unique, so I added the minimaldiener2007-10-18
| | | | | | | bandwidth operator in addition to the ABTE operator already there. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@86 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Moved definitions of coefficients to a single module in order to only havediener2007-10-16
them in one place. Added routines to return coefficients in all the missing cases. Also added routines to return 2 derivatives (only 2-1 and 4-2 so far). The routines calculating derivatives for whole grid functions have not been tested yet, so if you are using them, you will probably want to hold off on updating until I give the clear signal. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@85 f69c4107-0314-4c4f-9ad4-17e986b73f4a