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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 | 9bf94a4a9f1087dd1d418af59e8f76e9a85f655e (patch) | |
| tree | 52d203a30795630bd8022b4d6e993b753e340701 /lib/Support | |
| parent | 4474d87fd374dfd5c8b9d29783b73d670540c74f (diff) | |
| download | llvm-9bf94a4a9f1087dd1d418af59e8f76e9a85f655e.tar.gz llvm-9bf94a4a9f1087dd1d418af59e8f76e9a85f655e.tar.bz2 llvm-9bf94a4a9f1087dd1d418af59e8f76e9a85f655e.tar.xz | |
Add a FIXME
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34828 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
| -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)) |