public static void Reduce32(uint x, uint[] z)
{
if ((x != 0 && Nat224.Mul33WordAdd(PInv33, x, z, 0) != 0) ||
(z[6] == P6 && Nat224.Gte(z, P)))
{
Nat.Add33To(7, PInv33, z);
}
}
public static uint[] FromBigInteger(BigInteger x)
{
uint[] z = Nat224.FromBigInteger(x);
if (z[6] == P6 && Nat224.Gte(z, P))
{
Nat224.SubFrom(P, z);
}
return(z);
}
public static void AddOne(uint[] x, uint[] z)
{
uint c = Nat.Inc(7, x, z);
if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Twice(uint[] x, uint[] z)
{
uint c = Nat.ShiftUpBit(7, x, 0, z);
if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Add(uint[] x, uint[] y, uint[] z)
{
uint c = Nat224.Add(x, y, z);
if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Add(uint[] x, uint[] y, uint[] z)
{
uint c = Nat224.Add(x, y, z);
if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
{
Nat.Add33To(7, PInv33, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong cc = Nat224.Mul33Add(PInv33, xx, 7, xx, 0, z, 0);
uint c = Nat224.Mul33DWordAdd(PInv33, cc, z, 0);
Debug.Assert(c == 0 || c == 1);
if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
{
Nat.Add33To(7, PInv33, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
long xx10 = xx[10], xx11 = xx[11], xx12 = xx[12], xx13 = xx[13];
const long n = 1;
long t0 = (long)xx[7] + xx11 - n;
long t1 = (long)xx[8] + xx12;
long t2 = (long)xx[9] + xx13;
long cc = 0;
cc += (long)xx[0] - t0;
long z0 = (uint)cc;
cc >>= 32;
cc += (long)xx[1] - t1;
z[1] = (uint)cc;
cc >>= 32;
cc += (long)xx[2] - t2;
z[2] = (uint)cc;
cc >>= 32;
cc += (long)xx[3] + t0 - xx10;
long z3 = (uint)cc;
cc >>= 32;
cc += (long)xx[4] + t1 - xx11;
z[4] = (uint)cc;
cc >>= 32;
cc += (long)xx[5] + t2 - xx12;
z[5] = (uint)cc;
cc >>= 32;
cc += (long)xx[6] + xx10 - xx13;
z[6] = (uint)cc;
cc >>= 32;
cc += n;
Debug.Assert(cc >= 0);
z3 += cc;
z0 -= cc;
z[0] = (uint)z0;
cc = z0 >> 32;
if (cc != 0)
{
cc += (long)z[1];
z[1] = (uint)cc;
cc >>= 32;
cc += (long)z[2];
z[2] = (uint)cc;
z3 += cc >> 32;
}
z[3] = (uint)z3;
cc = z3 >> 32;
Debug.Assert(cc == 0 || cc == 1);
if ((cc != 0 && Nat.IncAt(7, z, 4) != 0) ||
(z[6] == P6 && Nat224.Gte(z, P)))
{
AddPInvTo(z);
}
}