diff options
Diffstat (limited to 'src/Coefficients_2.F90')
-rw-r--r-- | src/Coefficients_2.F90 | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/Coefficients_2.F90 b/src/Coefficients_2.F90 new file mode 100644 index 0000000..122961b --- /dev/null +++ b/src/Coefficients_2.F90 @@ -0,0 +1,56 @@ +#include "cctk.h" +#include "cctk_Functions.h" +#include "cctk_Parameters.h" + +subroutine set_coeff_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(1), save :: a + CCTK_REAL, dimension(1,1), save :: q + + CCTK_INT :: i, il, ir + + logical, save :: first = .true. + + if ( first ) then + call coeffs_1_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(1); + dd(i+1,i) = a(1) + imin(i) = i-1; imax(i) = i+1 + end do + +end subroutine set_coeff_2 |