/**
* MINVERSE
*
* @param array $matrixValues A matrix of values
* @return array
*/
public static function MINVERSE($matrixValues)
{
$matrixData = array();
if (!is_array($matrixValues)) {
$matrixValues = array(array($matrixValues));
}
$row = $maxColumn = 0;
foreach ($matrixValues as $matrixRow) {
$column = 0;
foreach ($matrixRow as $matrixCell) {
if (is_string($matrixCell) || $matrixCell === null) {
return self::$_errorCodes['value'];
}
$matrixData[$column][$row] = $matrixCell;
++$column;
}
if ($column > $maxColumn) {
$maxColumn = $column;
}
++$row;
}
if ($row != $maxColumn) {
return self::$_errorCodes['value'];
}
try {
$matrix = new Matrix($matrixData);
return $matrix->inverse()->getArray();
} catch (Exception $ex) {
return self::$_errorCodes['value'];
}
}
public function testInverse()
{
$matrix = new Matrix([[1, 0, 5], [2, 1, 6], [3, 4, 0]]);
$inverted = $matrix->inverse();
$result = new Matrix([[-24, 20, -5], [18, -15, 4], [5, -4, 1]]);
$this->assertTrue($inverted->equals($result));
}
/**
* MINVERSE
*
* @param array $matrixValues A matrix of values
* @return array
*/
public static function MINVERSE($matrixValues)
{
$matrixData = array();
$row = 0;
foreach ($matrixValues as $matrixRow) {
$column = 0;
foreach ($matrixRow as $matrixCell) {
if (is_string($matrixCell) || $matrixCell === null) {
return self::$_errorCodes['value'];
}
$matrixData[$column][$row] = $matrixCell;
++$column;
}
++$row;
}
$matrix = new Matrix($matrixData);
return $matrix->inverse()->getArray();
}
/**
* @expectedException \RangeException
*/
public function testInverseException()
{
$arr1 = [[4, 3], [3, 2], [4, 5]];
$mat1 = new Matrix($arr1);
$mat1->inverse();
}
