public static Matrix MultiplyBy(this Matrix matrix1, Matrix matrix2)
{
if (matrix1[0].Count != matrix2.Count)
{
throw new ArgumentOutOfRangeException("matrix1", "Non-conformable matrices cannot be multiplied.");
}
double[][] result = MatrixFactory.CreateEmpty(matrix1.Count, matrix2[0].Count);
for (int i = 0; i < matrix1.Count; ++i) // each row of 1
{
for (int j = 0; j < matrix2[0].Count; ++j) // each column of 2
{
for (int k = 0; k < matrix1[0].Count; ++k)
{
result[i][j] += matrix1[i][k] * matrix2[k][j];
}
}
}
return(result);
}
public static Matrix MultiplyBy(this Matrix matrix1, Matrix matrix2)
{
if (matrix1[0].Count != matrix2.Count)
{
throw new ArgumentOutOfRangeException(nameof(matrix1), "Non-conformable matrices cannot be multiplied.");
}
var result = MatrixFactory.CreateEmpty(matrix1.Count, matrix2[0].Count);
for (var i = 0; i < matrix1.Count; ++i) // each row of 1
{
for (var j = 0; j < matrix2[0].Count; ++j) // each column of 2
{
for (var k = 0; k < matrix1[0].Count; ++k)
{
result[i][j] += matrix1[i][k] * matrix2[k][j];
}
}
}
// ReSharper disable once CoVariantArrayConversion
return(result);
}