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| author | Tom Musta <tommusta@gmail.com> | 2014-01-07 17:17:51 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-07 19:18:07 +0000 |
| commit | 8d551c988e96ac4cfe462e6b34d513bba2da572f (patch) | |
| tree | 7cfaacb811725b450893ad522cad304b537b488a /scripts/switch-timer-api | |
| parent | a757f1c2deb6c8eac4a75f8e817fa2d7c8cd2527 (diff) | |
| download | qemu-8d551c988e96ac4cfe462e6b34d513bba2da572f.zip qemu-8d551c988e96ac4cfe462e6b34d513bba2da572f.tar.gz qemu-8d551c988e96ac4cfe462e6b34d513bba2da572f.tar.bz2 | |
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 'scripts/switch-timer-api')
0 files changed, 0 insertions, 0 deletions