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| author | Aldy Hernandez <aldyh@redhat.com> | 2022-11-08 23:42:04 +0100 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@redhat.com> | 2022-11-09 07:56:35 +0100 |
| commit | 68b0615be2aaff3a8ce91ba7cd0f69ebbd93702c (patch) | |
| tree | 64cc83a874d962de4b3a4c937b0c224fd8b68e19 /gcc/range-op.h | |
| parent | b305793b985f4d3e0032b04d446b8baabcb3e8b7 (diff) | |
| download | gcc-68b0615be2aaff3a8ce91ba7cd0f69ebbd93702c.zip gcc-68b0615be2aaff3a8ce91ba7cd0f69ebbd93702c.tar.gz gcc-68b0615be2aaff3a8ce91ba7cd0f69ebbd93702c.tar.bz2 | |
[range-op-float] Set NAN possibility for INF + (-INF) and vice versa.
Some combinations of operations can yield a NAN even if no operands
have the possiblity of a NAN. For example, [-INF] + [+INF] = NAN and
vice versa.
For [-INF,+INF] + [-INF,+INF], frange_arithmetic will not return a
NAN, and since the operands have no possibility of a NAN, we will
mistakenly assume the result cannot have a NAN. This fixes the
oversight.
gcc/ChangeLog:
* range-op-float.cc (foperator_plus::fold_range): Set NAN for
addition of different signed infinities.
(range_op_float_tests): New test.
Diffstat (limited to 'gcc/range-op.h')
0 files changed, 0 insertions, 0 deletions