[fpc-devel] 64 Bit / 32 Bit

Florian Klaempfl florian at freepascal.org
Thu Oct 4 10:08:48 CEST 2007

Michael Schnell schrieb:
> Jonas Maebe wrote:
>> On 02 Oct 2007, at 21:52, Daniƫl Mantione wrote:
>>> Of course not, because the sizes of the floating point types is
>>> defined by the IEEE 754 standard. On x86_64, you will have exactly the
>>> same types as on i386: single (32-bit), double (64-bit) and extended
>>> (80-bit).
>> Except for Win64, where we only support single and double (because
>> while the x87 is still supported there, it's deprecated).
> Ooops ?!?!?! No 80 Bit "extended" even though this is the native
> Floating point format of the CPU ?

In some Win64 beta MS disabled even the use of the FPU. Because this
went too far, MS marked the use of the FPU as deprecated.

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