258      * @param string $result
262     private static function generateInlineAdd($x, $y, $result, $class)  argument
266             $' . $result . ' = array_pad($' . $x . ', $length + 1, 0);
270                 $sum = ($' . $result . '[$j] + $_' . $y . '[$j]) * ' . $class::BASE_FULL . '
271                            + $' . $result . '[$i] + $_' . $y . '[$i] +
277 …'$upper = intval($sum / 0x4000000); $' . $result . '[$i] = (int) ($sum - ' . $class::BASE_FULL . '…
278 …          '$upper = $sum >> 31; $' . $result . '[$i] = $sum - ' . $class::BASE_FULL . ' * $upper;';
280                 $' . $result . '[$j] = $upper;
283                 $sum = $' . $result . '[$i] + $_' . $y . '[$i] + $carry;
285 …       $' . $result . '[$i] = $carry ? $sum - ' . self::float2string($class::BASE_FULL) . ' : $sum;
289                 for (; $' . $result . '[$i] == ' . $class::MAX_DIGIT . '; ++$i) {
290                     $' . $result . '[$i] = 0;
292                 ++$' . $result . '[$i];
294             $code .= self::generateInlineTrim($result);
306      * @param string $result
310     private static function generateInlineSubtract2($known, $unknown, $result, $class)  argument
313             $' . $result . ' = $' . $known . ';
328         $code .= '$' . $result . '[$i] = ';
337                 $' . $result . '[$j] = $subtemp;
342                 $' . $result . '[$i] = $carry ? $sum + ' . $class::BASE_FULL . ' : $sum;
347                 for (; !$' . $result . '[$i]; ++$i) {
348                     $' . $result . '[$i] = ' . $class::MAX_DIGIT . ';
350                 --$' . $result . '[$i];
353         $code .= self::generateInlineTrim($result);
365      * @param string $result
369     private static function generateInlineSubtract1($unknown, array $known, $result, $class)  argument
371         $code = '$' . $result . ' = $' . $unknown . ';';
388                 $' . $result . '[' . $i . '] = ';
397                 $' . $result . '[' . $j . '] = $subtemp;';
406                 $' . $result . '[' . $i . '] = $carry ? $sum + ' . $class::BASE_FULL . ' : $sum;
412                 for (; !$' . $result . '[$i]; ++$i) {
413                     $' . $result . '[$i] = ' . $class::MAX_DIGIT . ';
415                 --$' . $result . '[$i];
417         $code .= self::generateInlineTrim($result);