import java.io.*; 

public class WriteMatrix1 {

  static double[][] data = {
    { Math.exp(2.0), Math.exp(3.0), Math.exp(4.0) }, 
    { Math.exp(-2.0), Math.exp(-3.0), Math.exp(-4.0) }, 
  };
  
  public static void main(String[] args) {
    int row = data.length; 
    int col = data[0].length; 
    int i, j; 
    for (i = 0; i < row; i++) {
      for (j = 0; j < col; j++) {
	System.out.println("data[" + i + "][" + j + "] = " + data[i][j]);  
      }
    }
    
    if (args.length > 0) {
      try { 
	FileOutputStream out = new FileOutputStream(args[0]); 
	writeInt(row, out); 
	writeInt(col, out); 
	for (i = 0; i < row; i++) {
	  for (j = 0; j < col; j++) {
	    writeDouble(data[i][j], out); 
	  }
	}
	out.close(); 
      } catch (IOException e) {}  
    }
  }

  public static void writeInt(int i, OutputStream out) 
      throws IOException {
    byte[] buf = new byte[4];
    for (int k = 3; k >= 0; k--) {
      buf[k] = (byte)(i & 0xFF); 
      i >>>= 8; 
    }
    out.write(buf);
  }

  public static void writeDouble(double d, OutputStream out) 
       throws IOException {
    byte[] buf = new byte[8];
    long l = Double.doubleToLongBits(d); 
    for (int k = 7; k >= 0; k--) {
      buf[k] = (byte)(l & 0xFF); 
      l >>>= 8; 
    }
    out.write(buf);
  }

}