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- Subject: Re: Lua workshop: call for backup presentations.
- From: Dave Dodge <dododge@...>
- Date: Thu, 24 Aug 2006 17:05:28 -0400
On Thu, Aug 24, 2006 at 11:29:28AM -0700, Sam Roberts wrote:
> How much slower is it than onboard integral arithmetic? Don't some
> processors support BCD instructions?
Some 1960s IBM mainframes such as the 360 have BCD instructions. I
assume its successors such as the 370, 390, and the current zSeries
have the same instructions for backward compatibility. I don't know
if any modern CPUs support BCD for any reason _other_ than backward
compatibility with old code, though.
-Dave Dodge
