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<?php
namespace Chippyash\Math\Matrix\Attribute;
use Chippyash\Matrix\Interfaces\AttributeInterface;
use Chippyash\Matrix\Matrix;
use Chippyash\Math\Matrix\Traits\AssertMatrixIsNumeric;
use Chippyash\Matrix\Traits\AssertMatrixIsSquare;
use Chippyash\Math\Matrix\Derivative\Determinant;
class IsNonsingular implements AttributeInterface
{
use AssertMatrixIsNumeric;
use AssertMatrixIsSquare;
public function is(Matrix $mA)
{
$this->assertMatrixIsNumeric($mA)
->assertMatrixIsSquare($mA);
$fDet = new Determinant();
if ($fDet($mA)->get() == 0) {
return false;
}
return true;
}
}