public static void Reduce32(uint x, uint[] z)
{
ulong cc = 0;
if (x != 0)
{
cc += (ulong)z[0] + x;
z[0] = (uint)cc;
cc >>= 32;
if (cc != 0)
{
cc += (ulong)z[1];
z[1] = (uint)cc;
cc >>= 32;
}
cc += (ulong)z[2] + x;
z[2] = (uint)cc;
cc >>= 32;
Debug.Assert(cc == 0 || cc == 1);
}
if ((cc != 0 && Nat.IncAt(6, z, 3) != 0) ||
(z[5] == P5 && Nat192.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Reduce32(uint x, uint[] z)
{
if ((x != 0 && Nat192.Mul33WordAdd(PInv33, x, z, 0) != 0) ||
(z[5] == P5 && Nat192.Gte(z, P)))
{
Nat.Add33To(6, PInv33, z);
}
}
public static uint[] FromBigInteger(BigInteger x)
{
uint[] z = Nat192.FromBigInteger(x);
if (z[5] == P5 && Nat192.Gte(z, P))
{
Nat192.SubFrom(P, z);
}
return(z);
}
public static void AddOne(uint[] x, uint[] z)
{
uint c = Nat.Inc(6, x, z);
if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Twice(uint[] x, uint[] z)
{
uint c = Nat.ShiftUpBit(6, x, 0, z);
if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Add(uint[] x, uint[] y, uint[] z)
{
uint c = Nat192.Add(x, y, z);
if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
{
AddPInvTo(z);
}
}
public static void Add(uint[] x, uint[] y, uint[] z)
{
uint c = Nat192.Add(x, y, z);
if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
{
Nat.Add33To(6, PInv33, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong cc = Nat192.Mul33Add(PInv33, xx, 6, xx, 0, z, 0);
uint c = Nat192.Mul33DWordAdd(PInv33, cc, z, 0);
Debug.Assert(c == 0 || c == 1);
if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
{
Nat.Add33To(6, PInv33, z);
}
}
public static void Reduce(uint[] xx, uint[] z)
{
ulong xx06 = xx[6], xx07 = xx[7], xx08 = xx[8];
ulong xx09 = xx[9], xx10 = xx[10], xx11 = xx[11];
ulong t0 = xx06 + xx10;
ulong t1 = xx07 + xx11;
ulong cc = 0;
cc += (ulong)xx[0] + t0;
uint z0 = (uint)cc;
cc >>= 32;
cc += (ulong)xx[1] + t1;
z[1] = (uint)cc;
cc >>= 32;
t0 += xx08;
t1 += xx09;
cc += (ulong)xx[2] + t0;
ulong z2 = (uint)cc;
cc >>= 32;
cc += (ulong)xx[3] + t1;
z[3] = (uint)cc;
cc >>= 32;
t0 -= xx06;
t1 -= xx07;
cc += (ulong)xx[4] + t0;
z[4] = (uint)cc;
cc >>= 32;
cc += (ulong)xx[5] + t1;
z[5] = (uint)cc;
cc >>= 32;
z2 += cc;
cc += z0;
z[0] = (uint)cc;
cc >>= 32;
if (cc != 0)
{
cc += z[1];
z[1] = (uint)cc;
z2 += cc >> 32;
}
z[2] = (uint)z2;
cc = z2 >> 32;
Debug.Assert(cc == 0 || cc == 1);
if ((cc != 0 && Nat.IncAt(6, z, 3) != 0) ||
(z[5] == P5 && Nat192.Gte(z, P)))
{
AddPInvTo(z);
}
}
