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Subject: Re: Question about data structures

Author: Tom Kerrigan

Date: 00:03:18 11/30/98

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On November 30, 1998 at 02:07:26, David Blackman wrote:

>If it fits in 8 bits, use an 8 bit data type. You might want to hide
>it in a typedef in case you have to change the type later on.
>Reducing memory bandwidth and fitting more useful information in cache
>is a big win on modern CPUs.

No.

It takes time to divine 8 bits from the 32 bits that most modern CPUs work with.

With small arrays, using 32 bit elements will be a performance win. How much
depends on how much the arrays are accessed, though...

-Tom



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