public static void Reduce32(uint x, uint[] z)
{
long xx12 = x;
long cc = 0;
cc += (long)z[0] + xx12;
z[0] = (uint)cc;
cc >>= 32;
cc += (long)z[1] - xx12;
z[1] = (uint)cc;
cc >>= 32;
cc += (long)z[2];
z[2] = (uint)cc;
cc >>= 32;
cc += (long)z[3] + xx12;
z[3] = (uint)cc;
cc >>= 32;
cc += (long)z[4] + xx12;
z[4] = (uint)cc;
cc >>= 32;
Debug.Assert(cc >= 0);
if (cc > 0)
{
uint c = Nat.AddWord(12, (uint)cc, z, 5);
if (c != 0 || (z[11] == P11 && Nat.Gte(12, z, P)))
{
Nat.Sub(12, z, P, z);
}
}
}
public static void Reduce23(uint[] z)
{
uint z16 = z[16];
uint c = Nat.AddWord(16, z16 >> 9, z, 0) + (z16 & P16);
if (c > P16 || (c == P16 && Nat.Eq(16, z, P)))
{
c += Nat.Inc(16, z, 0);
c &= P16;
}
z[16] = c;
}