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| author | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-07-29 01:24:38 +0000 |
|---|---|---|
| committer | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-07-29 01:24:38 +0000 |
| commit | 314b93ea9a11200b8b5480588f38d406cdb8d741 (patch) | |
| tree | ee36e0c8644cd166844d2e15df7eac1226e2f595 /gcc/real.c | |
| parent | 5d5118741659a882c69d78d3fd977d7078f18294 (diff) | |
| download | gcc-314b93ea9a11200b8b5480588f38d406cdb8d741.tar.gz | |
PR c/21720
* real.c (real_from_string): Set last bit if there is a nonzero
hex digit beyond GCC's internal precision.
testsuite:
* gcc.dg/hex-round-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102539 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/real.c')
| -rw-r--r-- | gcc/real.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/real.c b/gcc/real.c index 9099f410f8d..045a803a594 100644 --- a/gcc/real.c +++ b/gcc/real.c @@ -1789,6 +1789,10 @@ real_from_string (REAL_VALUE_TYPE *r, const char *str) |= (unsigned long) d << (pos % HOST_BITS_PER_LONG); pos -= 4; } + else if (d) + /* Ensure correct rounding by setting last bit if there is + a subsequent nonzero digit. */ + r->sig[0] |= 1; exp += 4; str++; } |