Predefined Version expansion

[Daniel Keep]

Walter Bright wrote:
> Don Clugston wrote:
>> Yes, it's possible to detect the CPU type at runtime, but the
>> performance penalty is appalling for very short functions.
> 
> If it is, then one should put the switch at an enclosing level.

Out of interest, which is faster: a branch at the start of a function
(say, just a comparison with a bool), or using function pointers that
are set up to point to the correct implementation at start-up?

	-- Daniel

-- 
int getRandomNumber()
{
    return 4; // chosen by fair dice roll.
              // guaranteed to be random.
}

http://xkcd.com/

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