original_string: private function validateTimeout(?float $timeout): ?float
      {
          $timeout = (float) $timeout;
  
          if (0.0 === $timeout) {
              $timeout = null;
          } elseif ($timeout < 0) {
              throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.');
          }
  
          return $timeout;
      }
code: private function validateTimeout(?float $timeout): ?float
      {
          $timeout = (float) $timeout;
  
          if (0.0 === $timeout) {
              $timeout = null;
          } elseif ($timeout < 0) {
              throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.');
          }
  
          return $timeout;
      }
code_tokens: private function validateTimeout ( ? float $ timeout ) : ? float { $ timeout = ( float ) $ timeout ; if ( 0.0 === $ timeout ) { $ timeout = null ; } elseif ( $ timeout < 0 ) { throw new InvalidArgumentException ( 'The timeout value must be a valid positive integer or float number.' ) ; } return $ timeout ; }
docstring: Validates and returns the filtered timeout.
  
  @throws InvalidArgumentException if the given timeout is a negative number
docstring_tokens: Validates and returns the filtered timeout .