operator * method
Returns the product of two matrices.
Implementation
@override
Matrix<double> operator *(Matrix<double> other) {
if (columnCount != other.rowCount) {
throw const MatrixException('Matrices shapes mismatch! The column count '
'of the source matrix must match the row count of the other.');
}
// Performing the product
final flatMatrix = List.generate(
rowCount * columnCount,
(_) => 0.0,
growable: false,
);
// Performing the multiplication
for (var i = 0; i < rowCount; i++) {
for (var j = 0; j < other.columnCount; j++) {
var sum = 0.0;
for (var k = 0; k < rowCount; k++) {
sum += this(i, k) * other(k, j);
}
_setDataAt(flatMatrix, i, j, sum);
}
}
// Building the new matrix
return RealMatrix.fromFlattenedData(
rows: rowCount,
columns: columnCount,
data: flatMatrix,
);
}