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| author | Andrew Hsieh <andrewhsieh@google.com> | 2014-06-18 13:00:04 -0700 |
|---|---|---|
| committer | Pavel Chupin <pavel.v.chupin@intel.com> | 2014-06-19 22:38:42 +0400 |
| commit | f190d6284359da8ae8694b2d2e14b01602a959ed (patch) | |
| tree | d4e0548e7cec02d60b1082368032e66a1c509a02 /gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c | |
| parent | 4ff2f42147bc128ce38789071d98e55844cd3a5e (diff) | |
| download | toolchain_gcc-f190d6284359da8ae8694b2d2e14b01602a959ed.tar.gz toolchain_gcc-f190d6284359da8ae8694b2d2e14b01602a959ed.tar.bz2 toolchain_gcc-f190d6284359da8ae8694b2d2e14b01602a959ed.zip | |
Merge GCC 4.8.3
Change-Id: I0abe59f7705b3eccc6b2f123af75b2e30917696a
Diffstat (limited to 'gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c')
| -rw-r--r-- | gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c b/gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c index 28e02e995..574e395f8 100644 --- a/gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c +++ b/gcc-4.8/libgcc/config/rs6000/ibm-ldouble.c @@ -188,7 +188,16 @@ __gcc_qdiv (double a, double b, double c, double d) || nonfinite (t)) return t; - /* Finite nonzero result requires corrections to the highest order term. */ + /* Finite nonzero result requires corrections to the highest order + term. These corrections require the low part of c * t to be + exactly represented in double. */ + if (fabs (a) <= 0x1p-969) + { + a *= 0x1p106; + b *= 0x1p106; + c *= 0x1p106; + d *= 0x1p106; + } s = c * t; /* (s,sigma) = c*t exactly. */ w = -(-b + d * t); /* Written to get fnmsub for speed, but not |