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Re: Data types (was: Re: Access the neighbors of an element)
From: |
John W. Eaton |
Subject: |
Re: Data types (was: Re: Access the neighbors of an element) |
Date: |
Tue, 15 Feb 2005 07:52:37 -0500 |
On 15-Feb-2005, Paul Kienzle <address@hidden> wrote:
| The speedup on Intel is so big:
|
| that the slight slowdown on MIPS is a minor sacrifice:
|
| which is outweighed by the gains in other operations:
OK. Do you think this is likely to be true on all systems, or should
be implement a check? If it might be something that would be
different for specific CPUs even if they support the same instruction
set (i.e., not all x86 compatible hardware shows the same results)
then I think the check should be done at run time rather than at
build time.
| Also, the LONGLONG case should be changed regardless since
| casting to a double loses precision.
Currently we don't do 64-bit ops because of this (Matlab doesn't have
them either) but it would be nice to have them if we can.
jwe