public static void Reduce(uint[] xx, uint[] z)
{
ulong y = Nat256.Mul33Add(977u, xx, 8, xx, 0, z, 0);
if (Nat256.Mul33DWordAdd(977u, y, z, 0) != 0 || (z[7] == uint.MaxValue && Nat256.Gte(z, P)))
{
Nat.Add33To(8, 977u, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong y = Nat256.Mul33Add(0x3d1, xx, 8, xx, 0, z, 0);
if ((Nat256.Mul33DWordAdd(0x3d1, y, z, 0) != 0) || ((z[7] == uint.MaxValue) && Nat256.Gte(z, P)))
{
Nat.Add33To(8, 0x3d1, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong y = Nat256.Mul33Add(977u, xx, 8, xx, 0, z, 0);
if (Nat256.Mul33DWordAdd(977u, y, z, 0) != 0u || (z[7] == 4294967295u && Nat256.Gte(z, SecP256K1Field.P)))
{
Nat.Add33To(8, 977u, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong cc = Nat256.Mul33Add(PInv33, xx, 8, xx, 0, z, 0);
uint c = Nat256.Mul33DWordAdd(PInv33, cc, z, 0);
Debug.Assert(c == 0 || c == 1);
if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
{
Nat.Add33To(8, PInv33, z);
}
}
