tree 40fd55186fda91bcb743bfd9c63ef9913b0ff595
parent c11a527cd06a0a6c2cef0d986ea8f5ef0989505a
author mtklein <mtklein@chromium.org> 1447954848 -0800
committer Commit bot <commit-bot@chromium.org> 1447954848 -0800

Fix UB in SkDivBits

DIVBITS_ITER was shifting bits up into the sign bit, which is a no-no.
This turns numer into a uint32_t to make those defined, and adds a few notes.

x >= 0 is always true for unsigned x, so we needed a few small logic refactors.

BUG=skia:3562

Committed: https://skia.googlesource.com/skia/+/988adddd48322bfa3e3cb0c017cfce71fbbf1123

Review URL: https://codereview.chromium.org/1455163004