diff options
| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-19 04:17:11 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-19 04:17:11 +0000 |
| commit | b044deec88e847736d4bf49f2ac1978518d81a68 (patch) | |
| tree | e8a90d2006d130eb7cfc7fef2fb7db2523566785 /gcc/real.c | |
| parent | 2d2fca6b7e2d1e09da5d4db05e75c1143b8d212e (diff) | |
| download | gcc-b044deec88e847736d4bf49f2ac1978518d81a68.tar.gz | |
2006-12-18 Roger Sayle <roger@eyesopen.com>
Eric Christopher <echristo@apple.com>
PR target/29302
* real.c (real_maxval): Correctly handle IBM extended double format.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120040 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/real.c')
| -rw-r--r-- | gcc/real.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/real.c b/gcc/real.c index 0d239b3379d..b6e5ed6ee3e 100644 --- a/gcc/real.c +++ b/gcc/real.c @@ -2282,6 +2282,15 @@ real_maxval (REAL_VALUE_TYPE *r, int sign, enum machine_mode mode) np2 = SIGNIFICAND_BITS - fmt->p * fmt->log2_b; memset (r->sig, -1, SIGSZ * sizeof (unsigned long)); clear_significand_below (r, np2); + + if (fmt->pnan < fmt->p) + /* This is an IBM extended double format made up of two IEEE + doubles. The value of the long double is the sum of the + values of the two parts. The most significant part is + required to be the value of the long double rounded to the + nearest double. Rounding means we need a slightly smaller + value for LDBL_MAX. */ + clear_significand_bit (r, SIGNIFICAND_BITS - fmt->pnan); } } |