diff options
Diffstat (limited to 'lib/Support/APInt.cpp')
| -rw-r--r-- | lib/Support/APInt.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp index 36f88a2479..5ab16448b7 100644 --- a/lib/Support/APInt.cpp +++ b/lib/Support/APInt.cpp @@ -1239,6 +1239,9 @@ APInt APInt::sqrt() const { } // Make sure we return the closest approximation + // FIXME: This still has an off-by-one error in it. Test case: + // 190 bits: sqrt(694114394047834196220892040454508646882614255319893124270) = + // 26346050824513229049493703285 (not 26346050824513229049493703284) APInt square(x_old * x_old); APInt nextSquare((x_old + 1) * (x_old +1)); if (this->ult(square)) |