public function PHPExcel_Shared_JAMA_Matrix::trace in Loft Data Grids 6.2
Same name and namespace in other branches
- 7.2 vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/JAMA/Matrix.php \PHPExcel_Shared_JAMA_Matrix::trace()
* trace * * Sum of diagonal elements *
Return value
float Sum of diagonal elements
File
- vendor/
phpoffice/ phpexcel/ Classes/ PHPExcel/ Shared/ JAMA/ Matrix.php, line 397
Class
Code
public function trace() {
$s = 0;
$n = min($this->m, $this->n);
for ($i = 0; $i < $n; ++$i) {
$s += $this->A[$i][$i];
}
return $s;
}