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#define PERM4(r, i, j, k, l) \
aux = r[i]; \
r[i] = r[l]; \
r[l] = r[k]; \
r[k] = r[j]; \
r[j] = aux;
#define PERM22(r, i, j, k, l) \
aux = r[i]; \
r[i] = r[j]; \
r[j] = aux; \
aux = r[k]; \
r[k] = r[l]; \
r[l] = aux;
#define CO(a, b) \
aux = (a & _cobits) + (b & _cobits); \
auy = (aux + _ctwist_cw) >> 2U; \
auz = (aux + auy) & _cobits2; \
a = (a & _pbits) | auz;
#define CO4(r, i, j, k, l) \
CO(r[i], _ctwist_cw) \
CO(r[j], _ctwist_cw) \
CO(r[k], _ctwist_ccw) \
CO(r[l], _ctwist_ccw)
#define EO4(r, i, j, k, l) \
r[i] ^= _eobit; \
r[j] ^= _eobit; \
r[k] ^= _eobit; \
r[l] ^= _eobit;
uint8_t aux, auy, auz;
cube_t ret = c;
switch (m) {
case U:
PERM4(ret.e, _e_uf, _e_ul, _e_ub, _e_ur)
PERM4(ret.c, _c_ufr, _c_ufl, _c_ubl, _c_ubr)
return ret;
case U2:
PERM22(ret.e, _e_uf, _e_ub, _e_ul, _e_ur)
PERM22(ret.c, _c_ufr, _c_ubl, _c_ufl, _c_ubr)
return ret;
case U3:
PERM4(ret.e, _e_uf, _e_ur, _e_ub, _e_ul)
PERM4(ret.c, _c_ufr, _c_ubr, _c_ubl, _c_ufl)
return ret;
case D:
PERM4(ret.e, _e_df, _e_dr, _e_db, _e_dl)
PERM4(ret.c, _c_dfr, _c_dbr, _c_dbl, _c_dfl)
return ret;
case D2:
PERM22(ret.e, _e_df, _e_db, _e_dr, _e_dl)
PERM22(ret.c, _c_dfr, _c_dbl, _c_dbr, _c_dfl)
return ret;
case D3:
PERM4(ret.e, _e_df, _e_dl, _e_db, _e_dr)
PERM4(ret.c, _c_dfr, _c_dfl, _c_dbl, _c_dbr)
return ret;
case R:
PERM4(ret.e, _e_ur, _e_br, _e_dr, _e_fr)
PERM4(ret.c, _c_ufr, _c_ubr, _c_dbr, _c_dfr)
CO4(ret.c, _c_ubr, _c_dfr, _c_ufr, _c_dbr)
return ret;
case R2:
PERM22(ret.e, _e_ur, _e_dr, _e_fr, _e_br)
PERM22(ret.c, _c_ufr, _c_dbr, _c_ubr, _c_dfr)
return ret;
case R3:
PERM4(ret.e, _e_ur, _e_fr, _e_dr, _e_br)
PERM4(ret.c, _c_ufr, _c_dfr, _c_dbr, _c_ubr)
CO4(ret.c, _c_ubr, _c_dfr, _c_ufr, _c_dbr)
return ret;
case L:
PERM4(ret.e, _e_ul, _e_fl, _e_dl, _e_bl)
PERM4(ret.c, _c_ufl, _c_dfl, _c_dbl, _c_ubl)
CO4(ret.c, _c_ufl, _c_dbl, _c_dfl, _c_ubl)
return ret;
case L2:
PERM22(ret.e, _e_ul, _e_dl, _e_fl, _e_bl)
PERM22(ret.c, _c_ufl, _c_dbl, _c_ubl, _c_dfl)
return ret;
case L3:
PERM4(ret.e, _e_ul, _e_bl, _e_dl, _e_fl)
PERM4(ret.c, _c_ufl, _c_ubl, _c_dbl, _c_dfl)
CO4(ret.c, _c_ufl, _c_dbl, _c_dfl, _c_ubl)
return ret;
case F:
PERM4(ret.e, _e_uf, _e_fr, _e_df, _e_fl)
PERM4(ret.c, _c_ufr, _c_dfr, _c_dfl, _c_ufl)
EO4(ret.e, _e_uf, _e_fr, _e_df, _e_fl)
CO4(ret.c, _c_ufr, _c_dfl, _c_dfr, _c_ufl)
return ret;
case F2:
PERM22(ret.e, _e_uf, _e_df, _e_fr, _e_fl)
PERM22(ret.c, _c_ufr, _c_dfl, _c_ufl, _c_dfr)
return ret;
case F3:
PERM4(ret.e, _e_uf, _e_fl, _e_df, _e_fr)
PERM4(ret.c, _c_ufr, _c_ufl, _c_dfl, _c_dfr)
EO4(ret.e, _e_uf, _e_fr, _e_df, _e_fl)
CO4(ret.c, _c_ufr, _c_dfl, _c_dfr, _c_ufl)
return ret;
case B:
PERM4(ret.e, _e_ub, _e_bl, _e_db, _e_br)
PERM4(ret.c, _c_ubr, _c_ubl, _c_dbl, _c_dbr)
EO4(ret.e, _e_ub, _e_br, _e_db, _e_bl)
CO4(ret.c, _c_ubl, _c_dbr, _c_dbl, _c_ubr)
return ret;
case B2:
PERM22(ret.e, _e_ub, _e_db, _e_br, _e_bl)
PERM22(ret.c, _c_ubr, _c_dbl, _c_ubl, _c_dbr)
return ret;
case B3:
PERM4(ret.e, _e_ub, _e_br, _e_db, _e_bl)
PERM4(ret.c, _c_ubr, _c_dbr, _c_dbl, _c_ubl)
EO4(ret.e, _e_ub, _e_br, _e_db, _e_bl)
CO4(ret.c, _c_ubl, _c_dbr, _c_dbl, _c_ubr)
return ret;
default:
#ifdef DEBUG
fprintf(stderr, "mover error, unknown move\n");
#endif
goto move_error;
}
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