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#include "cctk.h"
#include "cctk_Parameters.h"
#include "cctk_Arguments.h"
#include "util_ErrorCodes.h"
#include "util_Table.h"
#include "stencil.h"
void DiffGv2 ( const CCTK_POINTER_TO_CONST cctkGH_, const CCTK_INT dir,
const CCTK_REAL *var, CCTK_REAL *dvar2,
const CCTK_INT table_handle )
{
cGH const * restrict const cctkGH = cctkGH_;
DECLARE_CCTK_PARAMETERS
DECLARE_CCTK_ARGUMENTS
CCTK_INT ni, nj, nk, gsize, loc_order;
CCTK_REAL delta;
CCTK_INT bb[2];
int onesided[6];
int nelements;
void CCTK_FCALL CCTK_FNAME(deriv2_gf_2_1)(const CCTK_REAL *var,
const CCTK_INT *ni,
const CCTK_INT *nj,
const CCTK_INT *nk,
const CCTK_INT *dir,
const CCTK_INT *bb,
const CCTK_INT *gsize,
const CCTK_REAL *delta,
CCTK_REAL *dvar2);
void CCTK_FCALL CCTK_FNAME(deriv2_gf_4_2)(const CCTK_REAL *var,
const CCTK_INT *ni,
const CCTK_INT *nj,
const CCTK_INT *nk,
const CCTK_INT *dir,
const CCTK_INT *bb,
const CCTK_INT *gsize,
const CCTK_REAL *delta,
CCTK_REAL *dvar2);
ni = cctk_lsh[0]; nj = cctk_lsh[1]; nk = cctk_lsh[2];
if ( table_handle >=0 ) {
nelements = Util_TableGetInt ( table_handle, &loc_order, "order" );
if ( nelements == UTIL_ERROR_TABLE_NO_SUCH_KEY ) {
loc_order = order;
} else if ( nelements != 1) {
CCTK_WARN (0, "The options table has an entry \"order\", but it does not have the right properties");
}
} else {
loc_order = order;
}
SBP_determine_onesided_stencil (cctkGH, onesided);
switch(dir) {
case 0: {
delta = CCTK_DELTA_SPACE(0);
bb[0] = onesided[0];
bb[1] = onesided[1];
gsize = cctk_nghostzones[0];
break;
}
case 1: {
delta = CCTK_DELTA_SPACE(1);
bb[0] = onesided[2];
bb[1] = onesided[3];
gsize = cctk_nghostzones[1];
break;
}
case 2: {
delta = CCTK_DELTA_SPACE(2);
bb[0] = onesided[4];
bb[1] = onesided[5];
gsize = cctk_nghostzones[2];
break;
}
default:
CCTK_WARN (0, "Wrong direction specified");
}
if ( CCTK_Equals(norm_type,"Diagonal") ) {
switch(loc_order) {
case 2: {
CCTK_FNAME(deriv2_gf_2_1)(var,&ni,&nj,&nk,&dir,bb,&gsize,&delta,dvar2);
break;
}
case 4: {
CCTK_FNAME(deriv2_gf_4_2)(var,&ni,&nj,&nk,&dir,bb,&gsize,&delta,dvar2);
break;
}
default:
CCTK_WARN (0, "Unknown 2nd derivative stencil specified");
}
} else {
switch(loc_order) {
default:
CCTK_WARN (0, "Unknown stencil specified");
}
}
}
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