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#include <cctk.h>
#include <cctk_Parameters.h>
#include <algorithm>
#include <cassert>
#include <cmath>
#include "gdata.hh"
#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), \
srciext, srcjext, srckext)
#define DSTIND3(i,j,k) \
index3 (dstioff + (i), dstjoff + (j), dstkoff + (k), \
dstiext, dstjext, dstkext)
#define SRCOFF3(i,j,k) \
offset3 (srcioff + (i), srcjoff + (j), srckoff + (k), \
srciext, srcjext, srckext)
#define DSTOFF3(i,j,k) \
offset3 (dstioff + (i), dstjoff + (j), dstkoff + (k), \
dstiext, dstjext, dstkext)
// 0D "restriction"
template <typename T>
struct restrict0 {
static inline T call (T const * restrict const p)
{
return * p;
}
};
// 1D restriction
template <typename T, int centi>
struct restrict1 {
static inline T call (T const * restrict const p,
size_t const d1);
};
template <typename T>
struct restrict1<T,0> {
static inline T call (T const * restrict const p,
size_t const d1)
{
T const res = restrict0<T>::call (p);
return res;
}
};
template <typename T>
struct restrict1<T,1> {
static inline T call (T const * restrict const p,
size_t const d1)
{
typedef typename typeprops<T>::real RT;
RT const one = 1;
RT const half = one/2;
T const res =
half * restrict0<T>::call (p ) +
half * restrict0<T>::call (p + d1);
return res;
}
};
// 2D restriction
template <typename T, int centi, int centj>
struct restrict2 {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2);
};
template <typename T, int centi>
struct restrict2<T,centi,0> {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2)
{
T const res = restrict1<T,centi>::call (p, d1);
return res;
}
};
template <typename T, int centi>
struct restrict2<T,centi,1> {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2)
{
typedef typename typeprops<T>::real RT;
RT const one = 1;
RT const half = one/2;
T const res =
half * restrict1<T,centi>::call (p , d1) +
half * restrict1<T,centi>::call (p + d2, d1);
return res;
}
};
// 3D restriction
template <typename T, int centi, int centj, int centk>
struct restrict3 {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2, size_t const d3);
};
template <typename T, int centi, int centj>
struct restrict3<T,centi,centj,0> {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2, size_t const d3)
{
T const res = restrict2<T,centi,centj>::call (p, d1, d2);
return res;
}
};
template <typename T, int centi, int centj>
struct restrict3<T,centi,centj,1> {
static inline T call (T const * restrict const p,
size_t const d1, size_t const d2, size_t const d3)
{
typedef typename typeprops<T>::real RT;
RT const one = 1;
RT const half = one/2;
T const res =
half * restrict2<T,centi,centj>::call (p , d1, d2) +
half * restrict2<T,centi,centj>::call (p + d3, d1, d2);
return res;
}
};
template <typename T, int centi, int centj, int centk>
void
restrict_3d_vc_rf2 (T const * restrict const src,
ivect3 const & restrict srcext,
T * restrict const dst,
ivect3 const & restrict dstext,
ibbox3 const & restrict srcbbox,
ibbox3 const & restrict dstbbox,
ibbox3 const & restrict srcregbbox,
ibbox3 const & restrict regbbox,
void * extraargs)
{
assert (not extraargs);
DECLARE_CCTK_PARAMETERS;
typedef typename typeprops<T>::real RT;
// false: vertex centered, true: cell centered
ivect const icent (centi, centj, centk);
assert (all (icent == 0 or icent == 1));
if (any (srcbbox.stride() >= regbbox.stride() or
dstbbox.stride() != regbbox.stride()))
{
CCTK_WARN (0, "Internal error: strides disagree");
}
if (any (reffact2 * srcbbox.stride() != dstbbox.stride())) {
CCTK_WARN (0, "Internal error: destination strides are not twice the source strides");
}
// This could be handled, but is likely to point to an error
// elsewhere
if (regbbox.empty()) {
CCTK_WARN (0, "Internal error: region extent is empty");
}
// shift vertex centered directions to lower interface (see
// Refluxing for conventions)
ivect const ivert(icent == 0);
ibbox3 const unshifted_srcbbox = srcbbox.shift(-ivert,2);
ibbox3 const unshifted_dstbbox = dstbbox.shift(-ivert,2);
// ibbox3 const unshifted_srcregbbox = srcregbbox.shift(-ivert,2);
ibbox3 const unshifted_regbbox = regbbox.shift(-ivert,2);
if (not unshifted_regbbox.expanded_for(unshifted_srcbbox).is_contained_in(unshifted_srcbbox) or
not unshifted_regbbox.is_contained_in(unshifted_dstbbox))
{
cerr << "unshifted_srcbbox: " << unshifted_srcbbox << endl
<< "unshifted_dstbbox: " << unshifted_dstbbox << endl
<< "unshifted_regbbox: " << unshifted_regbbox << endl;
CCTK_WARN (0, "Internal error: region extent is not contained in array extent");
}
if (any (srcext != gdata::allocated_memory_shape(srcbbox.shape() / srcbbox.stride()) or
dstext != gdata::allocated_memory_shape(dstbbox.shape() / dstbbox.stride())))
{
CCTK_WARN (0, "Internal error: array sizes don't agree with bounding boxes");
}
ivect3 const regext = regbbox.shape() / regbbox.stride();
assert (all (srcbbox.stride() % 2 == 0));
if (not (all ((regbbox.lower() - srcbbox.lower() - srcbbox.stride() / 2) %
srcbbox.stride() == 0)))
{
cout << "restrict_3d_vc_rf2.cc\n";
cout << "regbbox=" << regbbox << "\n";
cout << "srcbbox=" << srcbbox << "\n";
cout << "icent=" << icent << "\n";
}
assert (all ((regbbox.lower() - srcbbox.lower() - srcbbox.stride() / 2) %
srcbbox.stride() == 0));
ivect3 const srcoff =
(regbbox.lower() - srcbbox.lower() - srcbbox.stride() / 2) /
srcbbox.stride();
assert (all ((regbbox.lower() - dstbbox.lower()) % dstbbox.stride() == 0));
ivect3 const dstoff =
(regbbox.lower() - dstbbox.lower()) / dstbbox.stride();
int const srciext = srcext[0];
int const srcjext = srcext[1];
int const srckext = srcext[2];
int const dstiext = dstext[0];
int const dstjext = dstext[1];
int const dstkext = dstext[2];
int const regiext = regext[0];
int const regjext = regext[1];
int const regkext = regext[2];
int const srcioff = srcoff[0];
int const srcjoff = srcoff[1];
int const srckoff = srcoff[2];
int const dstioff = dstoff[0];
int const dstjoff = dstoff[1];
int const dstkoff = dstoff[2];
// size_t const srcdi == SRCOFF3(1,0,0) - SRCOFF3(0,0,0);
size_t const srcdi = 1;
assert (srcdi == SRCOFF3(1,0,0) - SRCOFF3(0,0,0));
size_t const srcdj = SRCOFF3(0,1,0) - SRCOFF3(0,0,0);
size_t const srcdk = SRCOFF3(0,0,1) - SRCOFF3(0,0,0);
// Loop over coarse region
#pragma omp parallel for //collapse(3)
for (int k=0; k<regkext; ++k) {
for (int j=0; j<regjext; ++j) {
for (int i=0; i<regiext; ++i) {
#ifdef CARPET_DEBUG
if(not (2 * k + centk < srckext and
2 * j + centj < srcjext and
2 * i + centi < srciext))
{
cout << "restrict_3d_vc_rf2.cc\n";
cout << "regext " << regext << "\n";
cout << "srcext " << srcext << "\n";
cout << "srcbbox=" << srcbbox << "\n";
cout << "dstbbox=" << dstbbox << "\n";
cout << "regbbox=" << regbbox << "\n";
cout << "srcregbbox=" << srcregbbox << "\n";
cout << "icent=" << icent << "\n";
}
assert(2 * k + centk < srckext and
2 * j + centj < srcjext and
2 * i + centi < srciext);
#endif
dst [DSTIND3(i, j, k)] =
restrict3<T,centi,centj,centk>::call
(& src[SRCIND3(2*i, 2*j, 2*k)], srcdi, srcdj, srcdk);
}
}
}
}
#define TYPECASE(N,T) \
template \
void \
restrict_3d_vc_rf2<T,0,0,0> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,0,0,1> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,0,1,0> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,0,1,1> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,1,0,0> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,1,0,1> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,1,1,0> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
ivect3 const & restrict dstext, \
ibbox3 const & restrict srcbbox, \
ibbox3 const & restrict dstbbox, \
ibbox3 const & restrict, \
ibbox3 const & restrict regbbox, \
void * extraargs); \
template \
void \
restrict_3d_vc_rf2<T,1,1,1> (T const * restrict const src, \
ivect3 const & restrict srcext, \
T * restrict const dst, \
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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