[Haskell-iPhone] Screwy Float values (Double fine, not rounding errors)

[Murray Campbell]

Hi all,

I've been noticing some strange Float behaviour (not rounding errors
but totally erroneous values for non-pathological values).

It seems to be a manifestation of GHC ticket #9125 which was reported
from a Raspberry Pi (arm) version.

A quick example:

> print (29.0 :: Float)

gives

> 2109.0

There is more detail at https://ghc.haskell.org/trac/ghc/ticket/9125#comment:1

Has anyone else seen this?  I'm running a compiled-from-source-tarball
7.8.3 as I couldn't get past the dreaded 'illegal instruction:4'
binary installation bug.  Simulator and device behave the same.

Thanks.