diff options
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 295b16c..393ecf4 100644 --- a/lib/Support/APFloat.cpp +++ b/lib/Support/APFloat.cpp @@ -1823,7 +1823,7 @@ APFloat::fusedMultiplyAdd(const APFloat &multiplicand, /* If two numbers add (exactly) to zero, IEEE 754 decrees it is a positive zero unless rounding to minus infinity, except that adding two like-signed zeroes gives that zero. */ - if (category == fcZero && sign != addend.sign) + if (category == fcZero && !(fs & opUnderflow) && sign != addend.sign) sign = (rounding_mode == rmTowardNegative); } else { fs = multiplySpecials(multiplicand); |