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| author | Herbert Valerio Riedel <hvr@gnu.org> | 2014-06-24 22:58:41 +0200 |
|---|---|---|
| committer | Herbert Valerio Riedel <hvr@gnu.org> | 2014-06-24 23:30:12 +0200 |
| commit | ec550e8f951e50fb91c89389e2e77a3358079c3a (patch) | |
| tree | 50295797463e2fa4bcb9ecef53ce652925b58344 /libffi-tarballs | |
| parent | d8abf85f8ca176854e9d5d0b12371c4bc402aac3 (diff) | |
| download | haskell-ec550e8f951e50fb91c89389e2e77a3358079c3a.tar.gz | |
Fixup c1035d51e to behave more like in GHC 7.6
The fix in c1035d51e (addressing #9231) was done under the assumption
that `Data.Fixed` is used only with power-of-10 `resolution`. This
follow-up fixup changes the behavior to be more consistent with the
previous behavior in GHC 7.6
For instance, for the following `B7` resolution
> data B7
> instance HasResolution B7 where resolution _ = 128
After this patch, the following behavior is now observable:
> 1.070 :: Fixed B7
1.062
> 1.062 :: Fixed B7
1.054
> read "1.070" :: Fixed B7
1.062
> read "1.062" :: Fixed B7
1.054
This doesn't provide the desirable "read . show == id" property
yet (which didn't hold in GHC 7.6 either), but at least `fromRational`
and `read` are consistent.
Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Diffstat (limited to 'libffi-tarballs')
0 files changed, 0 insertions, 0 deletions