Re: [B2-devel] Plan for 0.9 release ?

[Christian B. <cb...@st...>]

Hi!

On Sun, Jun 03, 2001 at 01:40:39PM +0200, Gwenole Beauchesne wrote:
> Ouch, I will then have to bug hunt why, in double-precision, MacOS 8
> scrollbars don't scroll whereas the window contents do scroll. In
> extended-precision, the scrollbars behavior is as expected.

MacOS 8 does Int->FP conversion by constructing an 80-bit float in memory
with a fixed exponent and writing the value into the lower (upper?) part
of the mantissa. This FP number is unnormalized. When a 68k FPU loads such
a number, it gets normalized. When an x86 FPU loads it, it generates an
error. That's the "scrollbar bug".

Bye,
Christian

-- 
  / Coding on PowerPC and proud of it
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