public function PHPExcel_Shared_JAMA_Matrix::times in Loft Data Grids 7.2

Same name and namespace in other branches

1. 6.2 vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/JAMA/Matrix.php \PHPExcel_Shared_JAMA_Matrix::times()

* times * * Matrix multiplication *

Parameters

mixed $n Matrix/Array/Scalar: * @return Matrix Product

File

vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/JAMA/Matrix.php, line 851

Class

PHPExcel_Shared_JAMA_Matrix

Code

public function times() {
  if (func_num_args() > 0) {
    $args = func_get_args();
    $match = implode(",", array_map('gettype', $args));
    switch ($match) {
      case 'object':
        if ($args[0] instanceof PHPExcel_Shared_JAMA_Matrix) {
          $B = $args[0];
        }
        else {
          throw new PHPExcel_Calculation_Exception(self::ArgumentTypeException);
        }
        if ($this->n == $B->m) {
          $C = new PHPExcel_Shared_JAMA_Matrix($this->m, $B->n);
          for ($j = 0; $j < $B->n; ++$j) {
            for ($k = 0; $k < $this->n; ++$k) {
              $Bcolj[$k] = $B->A[$k][$j];
            }
            for ($i = 0; $i < $this->m; ++$i) {
              $Arowi = $this->A[$i];
              $s = 0;
              for ($k = 0; $k < $this->n; ++$k) {
                $s += $Arowi[$k] * $Bcolj[$k];
              }
              $C->A[$i][$j] = $s;
            }
          }
          return $C;
        }
        else {
          throw new PHPExcel_Calculation_Exception(JAMAError(MatrixDimensionMismatch));
        }
        break;
      case 'array':
        $B = new PHPExcel_Shared_JAMA_Matrix($args[0]);
        if ($this->n == $B->m) {
          $C = new PHPExcel_Shared_JAMA_Matrix($this->m, $B->n);
          for ($i = 0; $i < $C->m; ++$i) {
            for ($j = 0; $j < $C->n; ++$j) {
              $s = "0";
              for ($k = 0; $k < $C->n; ++$k) {
                $s += $this->A[$i][$k] * $B->A[$k][$j];
              }
              $C->A[$i][$j] = $s;
            }
          }
          return $C;
        }
        else {
          throw new PHPExcel_Calculation_Exception(JAMAError(MatrixDimensionMismatch));
        }
        return $M;
        break;
      case 'integer':
        $C = new PHPExcel_Shared_JAMA_Matrix($this->A);
        for ($i = 0; $i < $C->m; ++$i) {
          for ($j = 0; $j < $C->n; ++$j) {
            $C->A[$i][$j] *= $args[0];
          }
        }
        return $C;
        break;
      case 'double':
        $C = new PHPExcel_Shared_JAMA_Matrix($this->m, $this->n);
        for ($i = 0; $i < $C->m; ++$i) {
          for ($j = 0; $j < $C->n; ++$j) {
            $C->A[$i][$j] = $args[0] * $this->A[$i][$j];
          }
        }
        return $C;
        break;
      case 'float':
        $C = new PHPExcel_Shared_JAMA_Matrix($this->A);
        for ($i = 0; $i < $C->m; ++$i) {
          for ($j = 0; $j < $C->n; ++$j) {
            $C->A[$i][$j] *= $args[0];
          }
        }
        return $C;
        break;
      default:
        throw new PHPExcel_Calculation_Exception(self::PolymorphicArgumentException);
        break;
    }
  }
  else {
    throw new PHPExcel_Calculation_Exception(self::PolymorphicArgumentException);
  }
}