diff options
| -rw-r--r-- | source/dng_ifd.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/source/dng_ifd.cpp b/source/dng_ifd.cpp index 317ebf9..7f22065 100644 --- a/source/dng_ifd.cpp +++ b/source/dng_ifd.cpp @@ -3979,7 +3979,7 @@ uint32 dng_ifd::TilesAcross () const if (fTileWidth) { - return (fImageWidth + fTileWidth - 1) / fTileWidth; + return (SafeUint32Sub(SafeUint32Add(fImageWidth, fTileWidth), 1)) / fTileWidth; } @@ -3995,7 +3995,7 @@ uint32 dng_ifd::TilesDown () const if (fTileLength) { - return (fImageLength + fTileLength - 1) / fTileLength; + return (SafeUint32Sub(SafeUint32Add(fImageLength, fTileLength), 1)) / fTileLength; } |