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Subject: 64-bit processors

Author: Ralf Elvsén

Date: 17:15:17 01/15/01

I looked ay the instruction set for the Itanium processor.
As far as I could see there was no instruction to get the first/last
bit set.

Can someone with insight in processor design describe the
considerations done by the designers when they decide to
include or to not include such an instruction? (Assuming they
are not chess programmers :)

Is it possible to quantify how the "trouble" to include
it scales with the number of bits? I.e. is it even less likely
to be found in an 128-bit processor?

Ralf

Re: 64-bit processors leonid 12:45:19 01/19/01
- Re: 64-bit processors Ralf Elvsén 16:16:11 01/19/01
  - Re: 64-bit processors leonid 05:12:06 01/20/01
Re: 64-bit processors Tim Mann 13:32:40 01/18/01
Re: 64-bit processors Larry Griffiths 20:29:42 01/15/01
- Re: 64-bit processors Robert Hyatt 15:49:06 01/16/01
  - Re: 64-bit processors Ralf Elvsén 03:41:14 01/17/01
  - Re: 64-bit processors Terry McCracken 21:48:26 01/16/01
    - Re: 64-bit processors Larry Griffiths 07:07:42 01/17/01
      - Re: 64-bit processors Robert Hyatt 07:15:05 01/18/01
        
        Re: 64-bit processors Larry Griffiths 14:48:20 01/18/01
        
        Re: 64-bit processors (Robert) Larry Griffiths 18:02:37 01/18/01
        
        Re: 64-bit processors (Robert) Robert Hyatt 06:06:58 01/19/01
        
        Re: 64-bit processors (Robert) Larry Griffiths 06:42:19 01/19/01
      - Re: 64-bit processors Terry McCracken 13:57:00 01/17/01
        
        Re: 64-bit processors Larry Griffiths 16:07:40 01/17/01

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