internal virtual void DoRandomSets(int maxSize, int iter, int mode)
{
BitArray a0 = null;
Int64BitSet b0 = null;
for (int i = 0; i < iter; i++)
{
int sz = TestUtil.NextInt(Random(), 2, maxSize);
BitArray a = new BitArray(sz);
Int64BitSet b = new Int64BitSet(sz);
// test the various ways of setting bits
if (sz > 0)
{
int nOper = Random().Next(sz);
for (int j = 0; j < nOper; j++)
{
int idx;
idx = Random().Next(sz);
a.SafeSet(idx, true);
b.Set(idx);
idx = Random().Next(sz);
a.SafeSet(idx, false);
b.Clear(idx);
idx = Random().Next(sz);
a.SafeSet(idx, !a.SafeGet(idx));
b.Flip(idx, idx + 1);
idx = Random().Next(sz);
a.SafeSet(idx, !a.SafeGet(idx));
b.Flip(idx, idx + 1);
bool val2 = b.Get(idx);
bool val = b.GetAndSet(idx);
Assert.IsTrue(val2 == val);
Assert.IsTrue(b.Get(idx));
if (!val)
{
b.Clear(idx);
}
Assert.IsTrue(b.Get(idx) == val);
}
}
// test that the various ways of accessing the bits are equivalent
DoGet(a, b);
// test ranges, including possible extension
int fromIndex, toIndex;
fromIndex = Random().Next(sz / 2);
toIndex = fromIndex + Random().Next(sz - fromIndex);
BitArray aa = new BitArray(a);
aa.Flip(fromIndex, toIndex);
Int64BitSet bb = b.Clone();
bb.Flip(fromIndex, toIndex);
fromIndex = Random().Next(sz / 2);
toIndex = fromIndex + Random().Next(sz - fromIndex);
aa = new BitArray(a);
aa.Clear(fromIndex, toIndex);
bb = b.Clone();
bb.Clear(fromIndex, toIndex);
DoNextSetBit(aa, bb); // a problem here is from clear() or nextSetBit
DoPrevSetBit(aa, bb);
fromIndex = Random().Next(sz / 2);
toIndex = fromIndex + Random().Next(sz - fromIndex);
aa = new BitArray(a);
aa.Set(fromIndex, toIndex);
bb = b.Clone();
bb.Set(fromIndex, toIndex);
DoNextSetBit(aa, bb); // a problem here is from set() or nextSetBit
DoPrevSetBit(aa, bb);
if (b0 != null && b0.Length <= b.Length)
{
Assert.AreEqual(a.Cardinality(), b.Cardinality());
BitArray a_and = new BitArray(a);
a_and = a_and.And_UnequalLengths(a0);
BitArray a_or = new BitArray(a);
a_or = a_or.Or_UnequalLengths(a0);
BitArray a_xor = new BitArray(a);
a_xor = a_xor.Xor_UnequalLengths(a0);
BitArray a_andn = new BitArray(a);
a_andn.AndNot(a0);
Int64BitSet b_and = b.Clone();
Assert.AreEqual(b, b_and);
b_and.And(b0);
Int64BitSet b_or = b.Clone();
b_or.Or(b0);
Int64BitSet b_xor = b.Clone();
b_xor.Xor(b0);
Int64BitSet b_andn = b.Clone();
b_andn.AndNot(b0);
Assert.AreEqual(a0.Cardinality(), b0.Cardinality());
Assert.AreEqual(a_or.Cardinality(), b_or.Cardinality());
Assert.AreEqual(a_and.Cardinality(), b_and.Cardinality());
Assert.AreEqual(a_or.Cardinality(), b_or.Cardinality());
Assert.AreEqual(a_xor.Cardinality(), b_xor.Cardinality());
Assert.AreEqual(a_andn.Cardinality(), b_andn.Cardinality());
}
a0 = a;
b0 = b;
}
}
internal virtual void DoRandomSets(int maxSize, int iter, int mode)
{
BitArray a0 = null;
OpenBitSet b0 = null;
for (int i = 0; i < iter; i++)
{
int sz = Random().Next(maxSize);
BitArray a = new BitArray(sz);
OpenBitSet b = new OpenBitSet(sz);
// test the various ways of setting bits
if (sz > 0)
{
int nOper = Random().Next(sz);
for (int j = 0; j < nOper; j++)
{
int idx;
idx = Random().Next(sz);
a.SafeSet(idx, true);
b.FastSet(idx);
idx = Random().Next(sz);
a.SafeSet(idx, true);
b.FastSet((long)idx);
idx = Random().Next(sz);
a.SafeSet(idx, false);
b.FastClear(idx);
idx = Random().Next(sz);
a.SafeSet(idx, false);
b.FastClear((long)idx);
idx = Random().Next(sz);
a.SafeSet(idx, !a.SafeGet(idx));
b.FastFlip(idx);
bool val = b.FlipAndGet(idx);
bool val2 = b.FlipAndGet(idx);
Assert.IsTrue(val != val2);
idx = Random().Next(sz);
a.SafeSet(idx, !a.SafeGet(idx));
b.FastFlip((long)idx);
val = b.FlipAndGet((long)idx);
val2 = b.FlipAndGet((long)idx);
Assert.IsTrue(val != val2);
val = b.GetAndSet(idx);
Assert.IsTrue(val2 == val);
Assert.IsTrue(b.Get(idx));
if (!val)
{
b.FastClear(idx);
}
Assert.IsTrue(b.Get(idx) == val);
}
}
// test that the various ways of accessing the bits are equivalent
DoGet(a, b);
DoGetFast(a, b, sz);
// test ranges, including possible extension
int fromIndex, toIndex;
fromIndex = Random().Next(sz + 80);
toIndex = fromIndex + Random().Next((sz >> 1) + 1);
BitArray aa = (BitArray)a.Clone();
// C# BitArray class does not support dynamic sizing.
// We have to explicitly change its size using the Length attribute.
if (toIndex > aa.Length)
{
aa.Length = toIndex;
}
aa.Flip(fromIndex, toIndex);
OpenBitSet bb = (OpenBitSet)b.Clone();
bb.Flip(fromIndex, toIndex);
DoIterate(aa, bb, mode); // a problem here is from flip or doIterate
fromIndex = Random().Next(sz + 80);
toIndex = fromIndex + Random().Next((sz >> 1) + 1);
aa = (BitArray)a.Clone();
if (toIndex > aa.Length)
{
aa.Length = toIndex;
}
aa.Clear(fromIndex, toIndex);
bb = (OpenBitSet)b.Clone();
bb.Clear(fromIndex, toIndex);
DoNextSetBit(aa, bb); // a problem here is from clear() or nextSetBit
DoNextSetBitLong(aa, bb);
DoPrevSetBit(aa, bb);
DoPrevSetBitLong(aa, bb);
fromIndex = Random().Next(sz + 80);
toIndex = fromIndex + Random().Next((sz >> 1) + 1);
aa = (BitArray)a.Clone();
if (toIndex > aa.Length)
{
aa.Length = toIndex;
}
aa.Set(fromIndex, toIndex);
bb = (OpenBitSet)b.Clone();
bb.Set(fromIndex, toIndex);
DoNextSetBit(aa, bb); // a problem here is from set() or nextSetBit
DoNextSetBitLong(aa, bb);
DoPrevSetBit(aa, bb);
DoPrevSetBitLong(aa, bb);
if (a0 != null)
{
aa = (BitArray)a.Clone();
BitArray aa0 = (BitArray)a0.Clone();
int largest = Math.Max(a.Length, a0.Length);
aa.Length = aa0.Length = largest;
// BitWiseEquals needs both arrays to be the same size for succeeding.
// We could enlarge the smallest of a and a0, but then the tests below
// won't test "UnequalLengths" operations.
Assert.AreEqual(aa.BitWiseEquals(aa0), b.Equals(b0));
Assert.AreEqual(a.Cardinality(), b.Cardinality());
BitArray a_and = (BitArray)a.Clone();
a_and = a_and.And_UnequalLengths(a0);
BitArray a_or = (BitArray)a.Clone();
a_or = a_or.Or_UnequalLengths(a0);
BitArray a_xor = (BitArray)a.Clone();
a_xor = a_xor.Xor_UnequalLengths(a0);
BitArray a_andn = (BitArray)a.Clone();
a_andn.AndNot(a0);
OpenBitSet b_and = (OpenBitSet)b.Clone();
Assert.AreEqual(b, b_and);
b_and.And(b0);
OpenBitSet b_or = (OpenBitSet)b.Clone();
b_or.Or(b0);
OpenBitSet b_xor = (OpenBitSet)b.Clone();
b_xor.Xor(b0);
OpenBitSet b_andn = (OpenBitSet)b.Clone();
b_andn.AndNot(b0);
DoIterate(a_and, b_and, mode);
DoIterate(a_or, b_or, mode);
DoIterate(a_xor, b_xor, mode);
DoIterate(a_andn, b_andn, mode);
Assert.AreEqual(a_and.Cardinality(), b_and.Cardinality());
Assert.AreEqual(a_or.Cardinality(), b_or.Cardinality());
Assert.AreEqual(a_xor.Cardinality(), b_xor.Cardinality());
Assert.AreEqual(a_andn.Cardinality(), b_andn.Cardinality());
// test non-mutating popcounts
Assert.AreEqual(b_and.Cardinality(), OpenBitSet.IntersectionCount(b, b0));
Assert.AreEqual(b_or.Cardinality(), OpenBitSet.UnionCount(b, b0));
Assert.AreEqual(b_xor.Cardinality(), OpenBitSet.XorCount(b, b0));
Assert.AreEqual(b_andn.Cardinality(), OpenBitSet.AndNotCount(b, b0));
}
a0 = a;
b0 = b;
}
}