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STATIC uint64_t coordinate_eo_coord(cube_t, const unsigned char *);
STATIC cube_t coordinate_eo_cube(uint64_t, const unsigned char *);
STATIC bool coordinate_eo_isnasty(uint64_t, const unsigned char *);
STATIC size_t coordinate_eo_gendata(unsigned char *);
STATIC bool is_eo_even(cube_t);
STATIC coord_t coordinate_eo = {
.name = "EO",
.coord = &coordinate_eo_coord,
.cube = &coordinate_eo_cube,
.isnasty = &coordinate_eo_isnasty,
.gendata = coordinate_eo_gendata,
.max = POW_2_11,
.trans_mask = TM_SINGLE(TRANS_UFr),
.moves_mask = MM18_ALLMOVES,
.axistrans = {
[AXIS_UD] = TRANS_FDr,
[AXIS_RL] = TRANS_URr,
[AXIS_FB] = TRANS_UFr,
},
.is_admissible = &solution_lastqt_cw,
.is_solvable = &is_eo_even,
.sym = {0},
};
STATIC uint64_t
coordinate_eo_coord(cube_t c, const unsigned char *data)
{
return (uint64_t)coord_eo(c);
}
STATIC cube_t
coordinate_eo_cube(uint64_t c, const unsigned char *data)
{
cube_t cube = SOLVED_CUBE;
set_eo(&cube, (int64_t)c);
return cube;
}
STATIC bool
coordinate_eo_isnasty(uint64_t c, const unsigned char *data)
{
return false;
}
STATIC size_t
coordinate_eo_gendata(unsigned char *data)
{
return 0;
}
STATIC bool
is_eo_even(cube_t cube)
{
uint8_t c[8], e[12], i, count;
pieces(&cube, c, e);
for (i = 0, count = 0; i < 12; i++)
count += (e[i] & EOBIT) >> EOSHIFT;
return count % 2 == 0;
}
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