A naive implementation of DGEMV() in Java

naive-dgemv.java

public double[] method(double[][] A, double[] x, int m, int n) {
  double[] y = new double[m];
  for (int i = 0; i < m; i++) {
    for (int j = 0; j < n; j++) {
      y[i] += A[i][j] * x[j];
    }
  }
  return y;
}