/// <summary>
/// Reseed the XorShift128+ engine with a combination of its current state and the supplied bit generator.
/// </summary>
/// <param name="bitGenerator">A supplier of bits used, in conjuction with the current state, to directly determine the new state of the random engine.</param>
/// <seealso cref="IRandom"/>
/// <seealso cref="RandomStateGenerator"/>
public override void MergeSeed(IBitGenerator bitGenerator)
{
int tryCount = 0;
do
{
#if MAKEITRANDOM_OPTIMIZE_FOR_32BIT
uint state0 = _state0 ^ bitGenerator.Next32();
uint state1 = _state1 ^ bitGenerator.Next32();
uint state2 = _state2 ^ bitGenerator.Next32();
uint state3 = _state3 ^ bitGenerator.Next32();
if (state0 != 0 || state1 != 0 || state2 != 0 || state3 != 0)
{
_state0 = state0;
_state1 = state1;
_state2 = state2;
_state3 = state3;
return;
}
#else
ulong state0 = _state0 ^ bitGenerator.Next64();
ulong state1 = _state1 ^ bitGenerator.Next64();
if (state0 != 0 || state1 != 0)
{
_state0 = state0;
_state1 = state1;
return;
}
#endif
} while (++tryCount < 4);
throw new System.ArgumentException("The provided bit generator was unable to generate a non-zero state, which is required by this random engine.");
}
/// <summary>
/// Reseed the XoroShiro128+ engine with a combination of its current state and the supplied bit generator.
/// </summary>
/// <param name="bitGenerator">A supplier of bits used, in conjuction with the current state, to directly determine the new state of the random engine.</param>
/// <seealso cref="IRandom"/>
/// <seealso cref="RandomStateGenerator"/>
public override void MergeSeed(IBitGenerator bitGenerator)
{
int tryCount = 0;
do
{
ulong state0 = _state0 ^ bitGenerator.Next64();
ulong state1 = _state1 ^ bitGenerator.Next64();
if (state0 != 0 && state1 != 0)
{
_state0 = state0;
_state1 = state1;
return;
}
} while (++tryCount < 4);
throw new System.ArgumentException("The provided bit generator was unable to generate a non-zero state, which is required by this random engine.");
}
/// <summary>
/// Reseed the XorShift1024* engine with a combination of its current state and the supplied bit generator.
/// </summary>
/// <param name="bitGenerator">A supplier of bits used, in conjuction with the current state, to directly determine the new state of the random engine.</param>
/// <seealso cref="IRandom"/>
/// <seealso cref="RandomStateGenerator"/>
public override void MergeSeed(IBitGenerator bitGenerator)
{
int tryCount = 0;
do
{
ulong[] state = new ulong[16];
bool allZeroes = true;
for (int i = 0; i < 16; ++i)
{
state[i] = _state[i] ^ bitGenerator.Next64();
allZeroes = allZeroes && state[i] == 0;
}
if (!allZeroes)
{
_state = state;
return;
}
} while (++tryCount < 4);
throw new System.ArgumentException("The provided bit generator was unable to generate a non-zero state, which is required by this random engine.");
}
/// <summary>
/// Reseed the SplitMix64 engine with a combination of its current state and the supplied bit generator.
/// </summary>
/// <param name="bitGenerator">A supplier of bits used, in conjuction with the current state, to directly determine the new state of the random engine.</param>
/// <seealso cref="IRandom"/>
/// <seealso cref="RandomStateGenerator"/>
public override void MergeSeed(IBitGenerator bitGenerator)
{
_state ^= bitGenerator.Next64();
}
/// <summary>
/// Reseed the SplitMix64 engine with the supplied bit generator.
/// </summary>
/// <param name="bitGenerator">A supplier of bits used to directly determine the new state of the random engine.</param>
/// <seealso cref="IRandom"/>
/// <seealso cref="RandomStateGenerator"/>
public override void Seed(IBitGenerator bitGenerator)
{
_state = bitGenerator.Next64();
}
