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Diffstat (limited to 'libquadmath/math/log2q.c')
| -rw-r--r-- | libquadmath/math/log2q.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libquadmath/math/log2q.c b/libquadmath/math/log2q.c index f8275369b37..865f341f03d 100644 --- a/libquadmath/math/log2q.c +++ b/libquadmath/math/log2q.c @@ -181,12 +181,15 @@ log2q (__float128 x) /* Test for domain */ GET_FLT128_WORDS64 (hx, lx, x); if (((hx & 0x7fffffffffffffffLL) | lx) == 0) - return (-1.0Q / (x - x)); + return (-1.0Q / fabsq (x)); /* log2l(+-0)=-inf */ if (hx < 0) return (x - x) / (x - x); if (hx >= 0x7fff000000000000LL) return (x + x); + if (x == 1.0Q) + return 0.0Q; + /* separate mantissa from exponent */ /* Note, frexp is used so that denormal numbers |