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| author | Brad Lucier <lucier@math.purdue.edu> | 2002-10-19 23:03:21 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-10-19 16:03:21 -0700 |
| commit | 433d5d04bc405d51ebff7f14e4cbad9f3f88412a (patch) | |
| tree | 97436f018f49752a110be35cf0d595020c56cca8 /gcc | |
| parent | 1194ca059028a55c9026606e5a73c0e01cd060cb (diff) | |
| download | gcc-433d5d04bc405d51ebff7f14e4cbad9f3f88412a.zip gcc-433d5d04bc405d51ebff7f14e4cbad9f3f88412a.tar.gz gcc-433d5d04bc405d51ebff7f14e4cbad9f3f88412a.tar.bz2 | |
real.c (do_add): Fix 0+0 sign corner case.
* real.c (do_add): Fix 0+0 sign corner case.
(do_divide): Fix Inf/0 corner case.
From-SVN: r58322
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/real.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a73f5da..06c5603 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-10-19 Brad Lucier <lucier@math.purdue.edu> + + * real.c (do_add): Fix 0+0 sign corner case. + (do_divide): Fix Inf/0 corner case. + Sun Oct 20 00:31:31 CEST 2002 Jan Hubicka <jh@suse.cz> * i386.c (classify_argument): Pass MMX arguments in memory @@ -578,8 +578,8 @@ do_add (r, a, b, subtract_p) switch (CLASS2 (a->class, b->class)) { case CLASS2 (rvc_zero, rvc_zero): - /* +-0 +/- +-0 = +0. */ - get_zero (r, 0); + /* -0 + -0 = -0, -0 - +0 = -0; all other cases yield +0. */ + get_zero (r, sign & !subtract_p); return; case CLASS2 (rvc_zero, rvc_normal): @@ -838,8 +838,6 @@ do_divide (r, a, b) { case CLASS2 (rvc_zero, rvc_zero): /* 0 / 0 = NaN. */ - case CLASS2 (rvc_inf, rvc_zero): - /* Inf / 0 = NaN. */ case CLASS2 (rvc_inf, rvc_inf): /* Inf / Inf = NaN. */ get_canonical_qnan (r, sign); @@ -856,6 +854,8 @@ do_divide (r, a, b) case CLASS2 (rvc_normal, rvc_zero): /* R / 0 = Inf. */ + case CLASS2 (rvc_inf, rvc_zero): + /* Inf / 0 = Inf. */ get_inf (r, sign); return; |