upper() public method

public upper ( boolean $unitriangular ) : self
$unitriangular boolean True to have ones along the diagonal. False to include parent matrix values, instead.
return self
Matrix Class Documentation
Esempio n. 1
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 /**
  * @return Matrix
  */
 public function upper() : Matrix
 {
     return $this->decomposition->upper(false);
 }
Esempio n. 2
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 public function testGetUpper()
 {
     $matrix = new Matrix([[2, 0, 2, 0.6], [3, 3, 4, -2], [5, 5, 4, 2], [-1, -2, 3.4, -1]]);
     $upper = $matrix->upper(true);
     static::assertEquals(1, $upper->get(0, 0));
     static::assertEquals(0, $upper->get(0, 1));
     static::assertEquals(2, $upper->get(0, 2));
     static::assertEquals(0.6, $upper->get(0, 3));
     static::assertEquals(0, $upper->get(1, 0));
     static::assertEquals(1, $upper->get(1, 1));
     static::assertEquals(4, $upper->get(1, 2));
     static::assertEquals(-2, $upper->get(1, 3));
     static::assertEquals(0, $upper->get(2, 0));
     static::assertEquals(0, $upper->get(2, 1));
     static::assertEquals(1, $upper->get(2, 2));
     static::assertEquals(2, $upper->get(2, 3));
     static::assertEquals(0, $upper->get(3, 0));
     static::assertEquals(0, $upper->get(3, 1));
     static::assertEquals(0, $upper->get(3, 2));
     static::assertEquals(1, $upper->get(3, 3));
 }