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| author | Tom Musta <tommusta@gmail.com> | 2014-01-07 17:17:51 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-08 19:07:22 +0000 |
| commit | 5e7f654fa152de246f2254707bacac31ba50c660 (patch) | |
| tree | 7c526839fc03c6b0fd058a558b3683b93b8493e2 /iohandler.c | |
| parent | 0a87a3107dad97abff5b06558b0cce6832229086 (diff) | |
| download | qemu-5e7f654fa152de246f2254707bacac31ba50c660.tar.gz | |
softfloat: Fix float64_to_uint32
The float64_to_uint32 has several flaws:
- for numbers between 2**32 and 2**64, the inexact exception flag
may get incorrectly set. In this case, only the invalid flag
should be set.
test pattern: 425F81378DC0CD1F / 0x1.f81378dc0cd1fp+38
- for numbers between 2**63 and 2**64, incorrect results may
be produced:
test pattern: 43EAAF73F1F0B8BD / 0x1.aaf73f1f0b8bdp+63
This patch re-implements float64_to_uint32 to re-use the
float64_to_uint64 routine (instead of float64_to_int64). For the
saturation case, we ignore any flags which the conversion routine
has set and raise only the invalid flag.
This contribution can be licensed under either the softfloat-2a or -2b
license.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Message-id: 1387397961-4894-5-git-send-email-tommusta@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'iohandler.c')
0 files changed, 0 insertions, 0 deletions