internal int GetEPermSym()
{
if (EPermR2S != null)
{
return(EPermR2S[GetEPerm()]);
}
if (temps == null)
{
temps = new CubieCube();
}
for (int k = 0; k < 16; k++)
{
EdgeConjugate(this, SymInv[k], temps);
int idx = Util.BinarySearch(EPermS2R, temps.GetEPerm());
if (idx != 0xffff)
{
return((idx << 4) | k);
}
}
return(0);
}
internal static void InitPermSym2Raw()
{
CubieCube c = new CubieCube();
CubieCube d = new CubieCube();
int[] occ = new int[40320 / 32];
int count = 0;
for (int i = 0; i < 40320 / 32; occ[i++] = 0)
{
;
}
EPermR2S = new char[40320];
for (int i = 0; i < 40320; i++)
{
if ((occ[i >> 5] & (1 << (i & 0x1f))) == 0)
{
c.SetEPerm(i);
for (int s = 0; s < 16; s++)
{
EdgeConjugate(c, s, d);
int idx = d.GetEPerm();
if (idx == i)
{
SymStatePerm[count] |= (char)(1 << s);
}
occ[idx >> 5] |= 1 << (idx & 0x1f);
int a = d.GetU4Comb();
int b = d.GetD4Comb() >> 9;
int m = 494 - (a & 0x1ff) + (a >> 9) * 70 + b * 1680;
MtoEPerm[m] = EPermR2S[idx] = (char)(count << 4 | s);
}
EPermS2R[count++] = (char)i;
}
}
}