/// <summary>
/// Multiplies two matrices on the CPU using a single thread
/// </summary>
/// <param name="one">The first matrix</param>
/// <param name="two">The second matrix</param>
/// <returns>The result of the multiplication</returns>
public FastMatrix <T> Multiply(FastMatrixBase <T> one, FastMatrixBase <T> two)
{
if (one == null || two == null)
{
throw new ArgumentNullException();
}
if (one.Columns != two.Rows)
{
throw new BadDimensionException(one.Rows, one.Columns, two.Rows,
two.Columns);
}
FastMatrix <T> returnMatrix = new FastMatrix <T>(one.Rows, two.Columns);
for (int i = 0; i < returnMatrix.Rows; i++)
{
for (int j = 0; j < returnMatrix.Columns; j++)
{
T sum = one[i, 0].Multiply(two[0, j]);
for (int k = 1; k < one.Rows; k++)
{
sum = sum.Add(one[i, k].Multiply(two[k, j]));
}
returnMatrix[i, j] = sum;
}
}
return(returnMatrix);
}
/// <summary>
/// Transposes a matrix on the CPU using a single thread
/// </summary>
/// <param name="matrix">The matrix</param>
/// <returns>The result of the transpose</returns>
public FastMatrix <T> Transpose(FastMatrixBase <T> matrix)
{
if (matrix == null)
{
throw new ArgumentNullException();
}
FastMatrix <T> returnMatrix = new FastMatrix <T>(matrix.Columns, matrix.Rows);
for (int i = 0; i < matrix.Rows; i++)
{
for (int j = 0; j < matrix.Columns; j++)
{
returnMatrix[j, i] = matrix[i, j];
}
}
return(returnMatrix);
}
/// <summary>
/// Transposes a matrix on the CPU using multiple threads
/// </summary>
/// <param name="matrix">The matrix</param>
/// <returns>The transposed matrix</returns>
public FastMatrix <T> Transpose(FastMatrixBase <T> matrix)
{
if (matrix == null)
{
throw new ArgumentNullException();
}
FastMatrix <T> returnMatrix = new FastMatrix <T>(matrix.Columns, matrix.Rows);
Parallel.For(0, matrix.Rows, (i) =>
{
for (int j = 0; j < matrix.Columns; j++)
{
returnMatrix[j, i] = matrix[i, j];
}
});
return(returnMatrix);
}
/// <summary>
/// Subtracts two matrices on the CPU using a single thread
/// </summary>
/// <param name="one">The first matrix</param>
/// <param name="two">The second matrix</param>
/// <returns>The result of the subtraction (one - two)</returns>
public FastMatrix <T> Subtract(FastMatrixBase <T> one, FastMatrixBase <T> two)
{
if (one == null || two == null)
{
throw new ArgumentNullException();
}
if ((one.Rows != two.Rows) || (one.Columns != two.Columns))
{
throw new BadDimensionException(one.Rows, one.Columns, two.Rows,
two.Columns);
}
FastMatrix <T> fastMatrix = new FastMatrix <T>(one.Rows, two.Columns);
for (int i = 0; i < one.Rows; i++)
{
for (int j = 0; j < one.Columns; j++)
{
fastMatrix[i, j] = one[i, j].Subtract(two[i, j]);
}
}
return(fastMatrix);
}
/// <summary>
/// Adds two matrices on the CPU using multiple threads
/// </summary>
/// <param name="one">The first matrix</param>
/// <param name="two">The second matrix</param>
/// <returns>The result of the addition</returns>
public FastMatrix <T> Add(FastMatrixBase <T> one, FastMatrixBase <T> two)
{
if (one == null || two == null)
{
throw new ArgumentNullException();
}
if ((one.Rows != two.Rows) || (one.Columns != two.Columns))
{
throw new BadDimensionException(one.Rows, one.Columns, two.Rows,
two.Columns);
}
FastMatrix <T> fastMatrix = new FastMatrix <T>(one.Rows, two.Columns);
Parallel.For(0, one.Rows, i =>
{
for (int j = 0; j < one.Columns; j++)
{
fastMatrix[i, j] = one[i, j].Add(two[i, j]);
}
});
return(fastMatrix);
}
/// <summary>
/// Checks if this matrix is equal to another by looking at their contents
/// </summary>
/// <param name="matrix">The matrix to compare to</param>
/// <returns>A bool representing wheter they are equal or not</returns>
public bool Equals(FastMatrix matrix)
{
// If parameter is null, return false.
if (Object.ReferenceEquals(matrix, null))
{
return(false);
}
// Optimization for a common success case.
if (Object.ReferenceEquals(this, matrix))
{
return(true);
}
// If run-time types are not exactly the same, return false.
if (this.GetType() != matrix.GetType())
{
return(false);
}
//if sizes aren'double same return false
if ((GetSize(0) != matrix.GetSize(0)) || (GetSize(1) != matrix.GetSize(1)))
{
return(false);
}
for (int i = 0; i < GetSize(0); i++)
{
for (int j = 0; j < GetSize(1); j++)
{
if (!matrix[i, j].Equals(this[i, j]))
{
return(false);
}
}
}
return(true);
}
