Add stencils for non-SBP operators.

git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@104 f69c4107-0314-4c4f-9ad4-17e986b73f4a

1 files changed, 55 insertions, 0 deletions

diff --git a/src/Coefficients2_2.F90 b/src/Coefficients2_2.F90
new file mode 100644
index 0000000..ab3f8e1
--- /dev/null
+++ b/src/Coefficients2_2.F90
@@ -0,0 +1,55 @@
+#include "cctk.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+subroutine set_coeff2_2 ( nsize, loc_order, bb, gsize, imin, imax, dd )
+
+  use All_Coeffs_mod
+
+  implicit none
+
+  DECLARE_CCTK_FUNCTIONS
+  DECLARE_CCTK_PARAMETERS
+
+  CCTK_INT, intent(IN) :: nsize, loc_order
+  CCTK_INT, dimension(2), intent(IN) :: bb
+  CCTK_INT, intent(IN) :: gsize
+  CCTK_INT, dimension(nsize), intent(OUT) :: imin, imax
+  CCTK_REAL, dimension(nsize,nsize), intent(OUT) :: dd
+
+  CCTK_REAL, dimension(2), save :: a
+  CCTK_REAL, dimension(1,1), save :: q 
+
+  CCTK_INT :: i, il, ir
+
+  logical, save :: first = .true.
+
+  if ( first ) then
+    call coeffs_2_2 ( a, q )
+    first = .false.
+  end if
+
+  dd = zero
+  imin = 0
+  imax = -1
+
+  if ( bb(1) == 0 ) then
+    il = 1 + gsize
+  else
+    dd(1,1) = q(1,1);
+    imin(1) = 1; imax(1) = 1
+    il = 2
+  end if
+  if ( bb(2) == 0 ) then
+    ir = nsize - gsize
+  else
+    dd(nsize,nsize) = q(1,1)
+    imin(nsize) = nsize; imax(nsize) = nsize
+    ir = nsize - 1
+  end if
+  do i = il, ir
+    dd(i-1,i) = a(2); dd(i:i+1,i) = a(1:2)
+    imin(i) = i-1; imax(i) = i+1
+  end do
+
+end subroutine set_coeff2_2