public static void Subtract(uint[] x, uint[] y, uint[] z)
{
if (Nat256.Sub(x, y, z) != 0)
{
Nat.Sub33From(8, 0x3d1, z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
if (Nat256.Sub(x, y, z) != 0)
{
SubPInvFrom(z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int c = Nat256.Sub(x, y, z);
if (c != 0)
{
Nat.Sub33From(8, PInv33, z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int num = Nat256.Sub(x, y, z);
if (num != 0)
{
Nat.Sub33From(8, 977u, z);
}
}
public static void Negate(uint[] x, uint[] z)
{
if (Nat256.IsZero(x))
{
Nat256.Zero(z);
return;
}
Nat256.Sub(SecP256K1Field.P, x, z);
}
public static uint[] FromBigInteger(BigInteger x)
{
uint[] z = Nat256.FromBigInteger(x);
if (z[7] == P7 && Nat256.Gte(z, P))
{
Nat256.Sub(z, P, z);
}
return(z);
}
public static void Twice(uint[] x, uint[] z)
{
uint c = Nat256.ShiftUpBit(x, 0, z);
if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
{
Nat256.Sub(z, P, z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int c = Nat256.Sub(x, y, z);
if (c != 0)
{
Nat256.Add(z, P, z);
}
}
public static void Add(uint[] x, uint[] y, uint[] z)
{
uint c = Nat256.Add(x, y, z);
if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
{
Nat256.Sub(z, P, z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int num = Nat256.Sub(x, y, z);
if (num != 0)
{
SecP256R1Field.SubPInvFrom(z);
}
}
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int c = Nat256.Sub(x, y, z);
if (c != 0)
{
Nat256.SubDWord(PInv, z);
}
}
public static void AddOne(uint[] x, uint[] z)
{
Nat256.Copy(x, z);
uint c = Nat256.Inc(z, 0);
if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
{
Nat256.Sub(z, P, z);
}
}
public static void Negate(uint[] x, uint[] z)
{
if (Nat256.IsZero(x))
{
Nat256.Zero(z);
}
else
{
Nat256.Sub(P, x, z);
}
}
public static void Reduce32(uint x, uint[] z)
{
long xx08 = x;
long cc = 0;
cc += (long)z[0] + xx08;
z[0] = (uint)cc;
cc >>= 32;
cc += (long)z[1];
z[1] = (uint)cc;
cc >>= 32;
cc += (long)z[2];
z[2] = (uint)cc;
cc >>= 32;
cc += (long)z[3] - xx08;
z[3] = (uint)cc;
cc >>= 32;
cc += (long)z[4];
z[4] = (uint)cc;
cc >>= 32;
cc += (long)z[5];
z[5] = (uint)cc;
cc >>= 32;
cc += (long)z[6] - xx08;
z[6] = (uint)cc;
cc >>= 32;
cc += (long)z[7] + xx08;
z[7] = (uint)cc;
cc >>= 32;
if (cc != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
{
Nat256.Sub(z, P, z);
}
}
