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-rw-r--r--lib/Support/APFloat.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index 65ec785725..a4c1affb7a 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -1947,7 +1947,7 @@ APFloat::roundSignificandWithExponent(const integerPart *decSigParts,
excessPrecision = calcSemantics.precision;
}
/* Extra half-ulp lost in reciprocal of exponent. */
- powHUerr = 1 + powStatus != opOK;
+ powHUerr = (powStatus == opOK && calcLostFraction == lfExactlyZero) ? 0: 2;
}
/* Both multiplySignificand and divideSignificand return the