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#include <cctk.h>
#include <cctk_Parameters.h>
#include <loopcontrol.h>
#include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdlib>
#include "operator_prototypes_3d.hh"
#include "typeprops.hh"
using namespace std;
namespace CarpetLib {
#define SRCIND3(i,j,k) \
index3 (srcioff + (i), srcjoff + (j), srckoff + (k), \
srcipadext, srcjpadext, srckpadext, \
srciext, srcjext, srckext)
#define DSTIND3(i,j,k) \
index3 (dstioff + (i), dstjoff + (j), dstkoff + (k), \
dstipadext, dstjpadext, dstkpadext, \
dstiext, dstjext, dstkext)
template <typename T>
void
interpolate_3d_3tl (T const * restrict const src1,
CCTK_REAL const t1,
T const * restrict const src2,
CCTK_REAL const t2,
T const * restrict const src3,
CCTK_REAL const t3,
ivect3 const & restrict srcpadext,
ivect3 const & restrict srcext,
T * restrict const dst,
CCTK_REAL const t,
ivect3 const & restrict dstpadext,
ivect3 const & restrict dstext,
ibbox3 const & restrict srcbbox,
ibbox3 const & restrict dstbbox,
ibbox3 const & restrict,
ibbox3 const & restrict regbbox,
void * extraargs)
{
assert (not extraargs);
typedef typename typeprops<T>::real RT;
if (any (srcbbox.stride() != regbbox.stride() or
dstbbox.stride() != regbbox.stride()))
{
CCTK_ERROR("Internal error: strides disagree");
}
if (any (srcbbox.stride() != dstbbox.stride())) {
CCTK_ERROR("Internal error: strides disagree");
}
// This could be handled, but is likely to point to an error
// elsewhere
if (regbbox.empty()) {
CCTK_ERROR("Internal error: region extent is empty");
}
if (not regbbox.is_contained_in(srcbbox) or
not regbbox.is_contained_in(dstbbox))
{
CCTK_ERROR("Internal error: region extent is not contained in array extent");
}
ivect3 const regext = regbbox.shape() / regbbox.stride();
assert (all ((regbbox.lower() - srcbbox.lower()) % srcbbox.stride() == 0));
ivect3 const srcoff = (regbbox.lower() - srcbbox.lower()) / srcbbox.stride();
assert (all ((regbbox.lower() - dstbbox.lower()) % dstbbox.stride() == 0));
ivect3 const dstoff = (regbbox.lower() - dstbbox.lower()) / dstbbox.stride();
ptrdiff_t const srcipadext = srcpadext[0];
ptrdiff_t const srcjpadext = srcpadext[1];
ptrdiff_t const srckpadext = srcpadext[2];
ptrdiff_t const dstipadext = dstpadext[0];
ptrdiff_t const dstjpadext = dstpadext[1];
ptrdiff_t const dstkpadext = dstpadext[2];
ptrdiff_t const srciext = srcext[0];
ptrdiff_t const srcjext = srcext[1];
ptrdiff_t const srckext = srcext[2];
ptrdiff_t const dstiext = dstext[0];
ptrdiff_t const dstjext = dstext[1];
ptrdiff_t const dstkext = dstext[2];
ptrdiff_t const regiext = regext[0];
ptrdiff_t const regjext = regext[1];
ptrdiff_t const regkext = regext[2];
ptrdiff_t const srcioff = srcoff[0];
ptrdiff_t const srcjoff = srcoff[1];
ptrdiff_t const srckoff = srcoff[2];
ptrdiff_t const dstioff = dstoff[0];
ptrdiff_t const dstjoff = dstoff[1];
ptrdiff_t const dstkoff = dstoff[2];
// Quadratic (second order) interpolation
RT const eps = 1.0e-10;
if (fabs (t1 - t2) < eps or fabs (t1 - t3) < eps or fabs (t2 - t3) < eps) {
CCTK_ERROR("Internal error: arrays have same time");
}
if (t < fmin (fmin (t1, t2), t3) - eps or
t > fmax (fmax (t1, t2), t3) + eps)
{
CCTK_ERROR("Internal error: extrapolation in time");
}
RT const s1fac = (t - t2) * (t - t3) / ((t1 - t2) * (t1 - t3));
RT const s2fac = (t - t1) * (t - t3) / ((t2 - t1) * (t2 - t3));
RT const s3fac = (t - t1) * (t - t2) / ((t3 - t1) * (t3 - t2));
// Loop over region
#pragma omp parallel
CCTK_LOOP3(interpolate_3d_3tl,
i,j,k, 0,0,0, regiext,regjext,regkext,
dstipadext,dstjpadext,dstkpadext)
{
dst [DSTIND3(i, j, k)] =
+ s1fac * src1 [SRCIND3(i, j, k)]
+ s2fac * src2 [SRCIND3(i, j, k)]
+ s3fac * src3 [SRCIND3(i, j, k)];
} CCTK_ENDLOOP3(interpolate_3d_3tl);
}
#define TYPECASE(N,T) \
template \
void \
interpolate_3d_3tl (T const * restrict const src1, \
CCTK_REAL const t1, \
T const * restrict const src2, \
CCTK_REAL const t2, \
T const * restrict const src3, \
CCTK_REAL const t3, \
ivect3 const & restrict srcpadext, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
CCTK_REAL const t, \
ivect3 const & restrict dstpadext, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs);
#include "typecase.hh"
#undef TYPECASE
} // namespace CarpetLib
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