/**
* Get a hashCode for the complex number. Any {@code Double.NaN} value in real or imaginary part
* produces the same hash code {@code 7}.
*
* @return a hash code value for this object.
*/
@Override
public int hashCode() {
if (isNaN) {
return 7;
}
return 37 * (17 * MathUtils.hash(imaginary) + MathUtils.hash(real));
}
/**
* Computes a hashcode for the matrix.
*
* @return hashcode for matrix
*/
@Override
public int hashCode() {
int ret = 7;
final int nRows = getRowDimension();
final int nCols = getColumnDimension();
ret = ret * 31 + nRows;
ret = ret * 31 + nCols;
for (int row = 0; row < nRows; ++row) {
for (int col = 0; col < nCols; ++col) {
ret = ret * 31 + (11 * (row + 1) + 17 * (col + 1)) * MathUtils.hash(getEntry(row, col));
}
}
return ret;
}