Bruno Cabasson <bru### [at] cabassoncom> wrote:
> NB: AKAIK, CPUs use a 80 bits format internally in all cases.

x87 uses 80-bit ("extended-precision") floating point values, but SSE doesn't
(it uses 64-bit values.) Thus the internal representation used by the
hardware will depend on whether POV-Ray has been compiled to use the FPU
or SSE.

(All floating point values will be stored in memory as 64-bit, though.
It's only the intermediate values inside the FPU that are 80-bit.)

-- 
                                                          - Warp

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