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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-09-26 14:06:58 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-09-26 14:06:58 +0000 |
| commit | 3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb (patch) | |
| tree | 438b0956b900cfe4122320661082c65a9ddf82d4 /lib/Support/APFloat.cpp | |
| parent | 50b7d70707960155ad28ff23d7622009b7b97eb3 (diff) | |
| download | llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.gz llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.bz2 llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.xz | |
APFloat::roundToIntegral: Special values don't keep the exponent value up to date, don't rely on it.
Add a couple of unit tests for special floats. Fixes 13929, found by MemorySanitizer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164698 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/APFloat.cpp')
| -rw-r--r-- | lib/Support/APFloat.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp index f143e6d0ad..d07a3c9e7f 100644 --- a/lib/Support/APFloat.cpp +++ b/lib/Support/APFloat.cpp @@ -1775,7 +1775,7 @@ APFloat::opStatus APFloat::roundToIntegral(roundingMode rounding_mode) { // If the exponent is large enough, we know that this value is already // integral, and the arithmetic below would potentially cause it to saturate // to +/-Inf. Bail out early instead. - if (exponent+1 >= (int)semanticsPrecision(*semantics)) + if (category == fcNormal && exponent+1 >= (int)semanticsPrecision(*semantics)) return opOK; // The algorithm here is quite simple: we add 2^(p-1), where p is the |