original_string: public function isFullRank()
      {
          for ($j = 0; $j < $this->n; ++$j) {
              if ($this->Rdiag[$j] == 0) {
                  return false;
              }
          }
          return true;
      }
code: public function isFullRank()
      {
          for ($j = 0; $j < $this->n; ++$j) {
              if ($this->Rdiag[$j] == 0) {
                  return false;
              }
          }
          return true;
      }
code_tokens: public function isFullRank ( ) { for ( $ j = 0 ; $ j < $ this -> n ; ++ $ j ) { if ( $ this -> Rdiag [ $ j ] == 0 ) { return false ; } } return true ; }
docstring: Is the matrix full rank?
  
  @return boolean true if R, and hence A, has full rank, else false.
docstring_tokens: Is the matrix full rank?