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#define DREOESEP_CLASSES UINT64_C(64430)
#define DREOESEP_MAX (POW_2_11 * COMB_12_4)
#define DR_CLASS_TABLESIZE (sizeof(uint32_t) * (size_t)DREOESEP_MAX)
#define DR_REP_TABLESIZE (sizeof(uint32_t) * (size_t)DREOESEP_CLASSES)
#define DR_COORD_DATASIZE (INFOSIZE + DR_CLASS_TABLESIZE + DR_REP_TABLESIZE)
#define DR_CLASS_SHIFT UINT32_C(16)
#define DR_CLASS_MASK (UINT32_C(0xFFFF) << DR_CLASS_SHIFT)
#define DR_CLASS(d) (((d) & DR_CLASS_MASK) >> DR_CLASS_SHIFT)
#define DR_TTREP_SHIFT UINT32_C(0)
#define DR_TTREP_MASK (UINT32_C(0xFF) << DR_TTREP_SHIFT)
#define DR_TTREP(d) (((d) & DR_TTREP_MASK) >> DR_TTREP_SHIFT)
#define DR_ISNASTY_SHIFT UINT32_C(8)
#define DR_ISNASTY_MASK (UINT32_C(0xFF) << DR_ISNASTY_SHIFT)
#define DR_ISNASTY(d) (((d) & DR_ISNASTY_MASK) >> DR_ISNASTY_SHIFT)
STATIC uint64_t coord_dreoesep_nosym(cube_t);
STATIC cube_t invcoord_dreoesep_nosym(uint64_t);
STATIC uint64_t coordinate_dr_coord(cube_t, const void *);
STATIC cube_t coordinate_dr_cube(uint64_t, const void *);
STATIC bool coordinate_dr_isnasty(uint64_t, const void *);
STATIC uint64_t coordinate_dr_gendata(void *);
STATIC coord_t coordinate_dr = {
.name = "DR",
.coord = &coordinate_dr_coord,
.cube = &coordinate_dr_cube,
.isnasty = &coordinate_dr_isnasty,
.gendata = coordinate_dr_gendata,
.max = DREOESEP_CLASSES * POW_3_7,
.trans_mask = TM_UDFIX,
.moves_mask = MM_ALLMOVES,
.axistrans = {
[AXIS_UD] = TRANS_UFr,
[AXIS_RL] = TRANS_RFr,
[AXIS_FB] = TRANS_FDr,
},
.is_admissible = &solution_lastqt_cw,
};
STATIC uint64_t
coord_dreoesep_nosym(cube_t cube)
{
uint64_t eo, esep;
esep = coord_esep(cube) / COMB_8_4;
eo = coord_eo(cube);
return esep * POW_2_11 + eo;
}
STATIC cube_t
invcoord_dreoesep_nosym(uint64_t coord)
{
uint64_t eo, esep;
cube_t cube;
eo = coord % POW_2_11;
esep = (coord / POW_2_11) * COMB_8_4;
cube = invcoord_esep(esep);
set_eo(&cube, eo);
return cube;
}
STATIC uint64_t
coordinate_dr_coord(cube_t cube, const void *data)
{
const char *datanoinfo;
const uint32_t *data32;
uint32_t d;
cube_t transformed;
datanoinfo = (const char *)data + INFOSIZE;
data32 = (const uint32_t *)datanoinfo;
d = data32[coord_dreoesep_nosym(cube)];
transformed = transform(cube, DR_TTREP(d));
return DR_CLASS(d) * POW_3_7 + coord_co(transformed);
}
STATIC cube_t
coordinate_dr_cube(uint64_t coord, const void *data)
{
const char *datanoinfo;
const uint32_t *rep32;
cube_t cube;
datanoinfo = (const char *)data + INFOSIZE;
rep32 = (const uint32_t *)(datanoinfo + DR_CLASS_TABLESIZE);
cube = invcoord_dreoesep_nosym(rep32[coord / POW_3_7]);
copy_corners(&cube, invcoord_co(coord % POW_3_7));
return cube;
}
STATIC bool
coordinate_dr_isnasty(uint64_t coord, const void *data)
{
const char *datanoinfo;
const uint32_t *classttrep, *rep32;
uint32_t r;
datanoinfo = (const char *)data + INFOSIZE;
classttrep = (const uint32_t *)datanoinfo;
rep32 = (const uint32_t *)(datanoinfo + DR_CLASS_TABLESIZE);
r = rep32[coord / POW_3_7];
return DR_ISNASTY(classttrep[r]);
}
STATIC size_t
coordinate_dr_gendata(void *data)
{
uint64_t i, j, n, t, nasty;
char *datanoinfo;
uint32_t *classttrep, *rep;
cube_t c;
tableinfo_t info;
if (data == NULL)
goto coordinate_dr_gendata_returnsize;
datanoinfo = (char *)data + INFOSIZE;
classttrep = (uint32_t *)datanoinfo;
rep = classttrep + (DR_CLASS_TABLESIZE / sizeof(uint32_t));
memset(data, 0xFF, DR_COORD_DATASIZE);
info = (tableinfo_t) {
.solver = "coord data for DR",
.type = TABLETYPE_SPECIAL,
.infosize = INFOSIZE,
.fullsize = DR_COORD_DATASIZE,
.hash = 0,
.entries = DREOESEP_CLASSES + DREOESEP_MAX,
.classes = DREOESEP_CLASSES,
.bits = 32,
.base = 0,
.maxvalue = 0,
.next = 0
};
for (i = 0, n = 0; i < COMB_12_4 * POW_2_11; i++) {
if (classttrep[i] != 0xFFFFFFFF)
continue;
c = invcoord_dreoesep_nosym(i);
for (t = 1, nasty = 0; t < NTRANS && !nasty; t++) {
if (!((UINT64_C(1) << t) & coordinate_dr.trans_mask))
continue;
nasty = i == coord_dreoesep_nosym(transform(c, t));
}
for (t = 0; t < NTRANS; t++) {
if (!((UINT64_C(1) << t) & coordinate_dr.trans_mask))
continue;
j = coord_dreoesep_nosym(transform(c, t));
classttrep[j] =
(n << DR_CLASS_SHIFT) |
(nasty << DR_ISNASTY_SHIFT) |
(inverse_trans(t) << DR_TTREP_SHIFT);
}
rep[n++] = i;
}
writetableinfo(&info, DR_COORD_DATASIZE, data);
DBG_ASSERT(n == DREOESEP_CLASSES, 0,
"dr coordinate data: computed %" PRIu64 " classes, "
"expected %" PRIu64 "\n", n, DREOESEP_CLASSES);
coordinate_dr_gendata_returnsize:
return DR_COORD_DATASIZE;
}
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