/// <summary>
/// Returns <i>true</i> if both matrices share at least one identical cell.
/// </summary>
protected new Boolean HaveSharedCellsRaw(ObjectMatrix1D other)
{
if (other is SelectedDenseObjectMatrix1D)
{
SelectedDenseObjectMatrix1D otherMatrix = (SelectedDenseObjectMatrix1D)other;
return(this.Elements == otherMatrix.Elements);
}
else if (other is DenseObjectMatrix1D)
{
DenseObjectMatrix1D otherMatrix = (DenseObjectMatrix1D)other;
return(this.Elements == otherMatrix.Elements);
}
return(false);
}
/// <summary>
/// Replaces all cell values of the receiver with the values of another matrix.
/// Both matrices must have the same size.
/// If both matrices share the same cells (as is the case if they are views derived from the same matrix) and intersect in an ambiguous way, then replaces <i>as if</i> using an intermediate auxiliary deep copy of <i>other</i>.
/// </summary>
/// <param name="source">the source matrix to copy from (may be identical to the receiver).</param>
/// <returns><i>this</i> (for convenience only).</returns>
/// <exception cref="ArgumentException">if <i>size() != other.Count</i>.</exception>
public override ObjectMatrix1D Assign(ObjectMatrix1D source)
{
// overriden for performance only
if (!(source is DenseObjectMatrix1D))
{
return(base.Assign(source));
}
DenseObjectMatrix1D other = (DenseObjectMatrix1D)source;
if (other == this)
{
return(this);
}
CheckSize(other);
if (!IsView && !other.IsView)
{ // quickest
Array.Copy(other.Elements, 0, this.Elements, 0, this.Elements.Length);
return(this);
}
if (HaveSharedCells(other))
{
ObjectMatrix1D c = other.Copy();
if (!(c is DenseObjectMatrix1D))
{ // should not happen
return(base.Assign(source));
}
other = (DenseObjectMatrix1D)c;
}
Object[] elems = this.Elements;
Object[] otherElems = other.Elements;
if (Elements == null || otherElems == null)
{
throw new NullReferenceException();
}
int s = this.Stride;
int ys = other.Stride;
int index = base.Index(0);
int otherIndex = other.Index(0);
for (int k = Size; --k >= 0;)
{
elems[index] = otherElems[otherIndex];
index += s;
otherIndex += ys;
}
return(this);
}
/// <summary>
/// Swaps each element <i>this[i]</i> with <i>other[i]</i>.
/// </summary>
/// <param name=""></param>
/// <returns></returns>
/// <exception cref="ArgumentException">if <i>size() != other.Count</i>.</exception>
public override void Swap(ObjectMatrix1D other)
{
// overriden for performance only
if (!(other is DenseObjectMatrix1D))
{
base.Swap(other);
}
DenseObjectMatrix1D y = (DenseObjectMatrix1D)other;
if (y == this)
{
return;
}
CheckSize(y);
Object[] elems = this.Elements;
Object[] otherElems = y.Elements;
if (Elements == null || otherElems == null)
{
throw new NullReferenceException();
}
int s = this.Stride;
int ys = y.Stride;
int index = base.Index(0);
int otherIndex = y.Index(0);
for (int k = Size; --k >= 0;)
{
Object tmp = elems[index];
elems[index] = otherElems[otherIndex];
otherElems[otherIndex] = tmp;
index += s;
otherIndex += ys;
}
return;
}
