private static void PointLookup(int block, int index, PointPrecomp p)
{
Debug.Assert(0 <= block && block < PrecompBlocks);
Debug.Assert(0 <= index && index < PrecompPoints);
int off = block * PrecompPoints * 2 * X448Field.Size;
for (int i = 0; i < PrecompPoints; ++i)
{
int cond = ((i ^ index) - 1) >> 31;
X448Field.CMov(cond, precompBase, off, p.x, 0); off += X448Field.Size;
X448Field.CMov(cond, precompBase, off, p.y, 0); off += X448Field.Size;
}
}