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RE: Processor-specific code


----Original Message----
>From: Paul Koning
>Sent: 15 April 2005 17:56

>>>>>> "Dave" == Dave Korn <dave.korn@artimi.com> writes:
> 
>  Dave> Doesn't the C language spec require the mode to be switchable
>  Dave> at runtime?
> 
>  Dave> In any case, the ARM or Alpha isn't prevented from working in
>  Dave> such a fashion just because the rounding mode is encoded in the
>  Dave> instruction; it just means that fp primitives have to be
>  Dave> compiled as intrinsics that test whatever flag controls the
>  Dave> rounding mode and then branch to an fp insn of the appropriate
>  Dave> form.
> 
> That only works if the notion of switchable rounding mode exists.  

  I'm not sure.  Either you don't get me, or I don't get you, but what I
thought I was describing was a way of working around the lack of a
switchable mode by compiling the code both ways with a runtime test of a
flag.


    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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