PHP MCordingley\LinearAlgebra Matrix::lower 예제들

lower() 공개 메소드

public lower ( boolean $unitriangular ) : self
$unitriangular	boolean	True to have ones along the diagonal. False to include parent matrix values, instead.
리턴	self

예제 #1

파일: LU.php 프로젝트: mcordingley/linearalgebra

 /**
  * @return Matrix
  */
 public function lower() : Matrix
 {
     return $this->decomposition->lower(true);
 }

예제 #2

파일: MatrixTest.php 프로젝트: mcordingley/linearalgebra

 public function testGetLower()
 {
     $matrix = new Matrix([[2, 0, 2, 0.6], [3, 3, 4, -2], [5, 5, 4, 2], [-1, -2, 3.4, -1]]);
     $lower = $matrix->lower(true);
     static::assertEquals(1, $lower->get(0, 0));
     static::assertEquals(0, $lower->get(0, 1));
     static::assertEquals(0, $lower->get(0, 2));
     static::assertEquals(0, $lower->get(0, 3));
     static::assertEquals(3, $lower->get(1, 0));
     static::assertEquals(1, $lower->get(1, 1));
     static::assertEquals(0, $lower->get(1, 2));
     static::assertEquals(0, $lower->get(1, 3));
     static::assertEquals(5, $lower->get(2, 0));
     static::assertEquals(5, $lower->get(2, 1));
     static::assertEquals(1, $lower->get(2, 2));
     static::assertEquals(0, $lower->get(2, 3));
     static::assertEquals(-1, $lower->get(3, 0));
     static::assertEquals(-2, $lower->get(3, 1));
     static::assertEquals(3.4, $lower->get(3, 2));
     static::assertEquals(1, $lower->get(3, 3));
 }