[fpc-devel] Extended in Win64

[Daniël Mantione]

Op Tue, 6 May 2008, schreef Jonas Maebe:

>
> On 06 May 2008, at 15:02, petr.kristan at epos.cz wrote:
>
>> Why on Win64 on AMD64 is Extended type 64bit same as double and on Win32=
, =

>> Linux32 and
>> Linux64 is 80bit.
>
> Because the original win64 releases did not support the use of the 80x87 =

> floating point unit

Actually this is a myth, originating from Microsoft itself. Win64 has =

always supported the x87, but early Microsoft documentation said
it did not. This confused Microsofts' MASM coders which disabled the x87 =

instructions in MASM.

Dani=EBl