public static void CNegate(int negate, uint[] z)
{
Debug.Assert(negate >> 1 == 0);
uint[] t = Create();
Sub(t, z, t);
Nat.CMov(Size, negate, t, 0, z, 0);
}
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 mask = ((i ^ index) - 1) >> 31;
Nat.CMov(X448Field.Size, mask, precompBase, off, p.x, 0); off += X448Field.Size;
Nat.CMov(X448Field.Size, mask, precompBase, off, p.y, 0); off += X448Field.Size;
}
}
