diff options
| -rw-r--r-- | src/library.js | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/library.js b/src/library.js index 5b58b47f..db84430e 100644 --- a/src/library.js +++ b/src/library.js @@ -7560,8 +7560,10 @@ LibraryManager.library = { a = a|0; b = b|0; c = c|0; d = d|0; var l = 0, h = 0, overflow = 0; l = (a + c)>>>0; - h = (((b + d)>>>0) + (((l>>>0) < (a>>>0))>>>0))>>>0; // Add carry from low word to high word on overflow. - overflow = (((h>>>0) < (b>>>0))>>>0); // Return whether addition overflowed even the high word. + h = (b + d)>>>0; + overflow = ((h>>>0) < (b>>>0))>>>0; // Return whether addition overflowed even the high word. + h = h + (((l>>>0) < (a>>>0))>>>0)>>>0; // Add carry from low word to high word on overflow. + overflow = (overflow | ((h == 0)>>>0))>>>0; // Check again for overflow. {{{ makeStructuralReturn(['l|0', 'h', 'overflow'], true) }}}; }, |