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| author | Reid Spencer <rspencer@reidspencer.com> | 2007-03-02 02:01:34 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2007-03-02 02:01:34 +0000 |
| commit | c44bdae16b03832ce7f8ed19aed250e77db6a5f2 (patch) | |
| tree | b63d642446e8d78476df963e73e3059df02fee9a /llvm/lib/Support/APInt.cpp | |
| parent | 91643aa96fac275e5bdca86b010efdef266292cb (diff) | |
| download | bcm5719-llvm-c44bdae16b03832ce7f8ed19aed250e77db6a5f2.tar.gz bcm5719-llvm-c44bdae16b03832ce7f8ed19aed250e77db6a5f2.zip | |
Add a FIXME
llvm-svn: 34828
Diffstat (limited to 'llvm/lib/Support/APInt.cpp')
| -rw-r--r-- | llvm/lib/Support/APInt.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp index 36f88a24798..5ab16448b77 100644 --- a/llvm/lib/Support/APInt.cpp +++ b/llvm/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)) |
