Re: Help calculating large modulus

From: Gordon (elf_ster_at_hotmail.com)
Date: 12/08/03 

Date: 8 Dec 2003 11:32:32 -0800

Thank you all for your answers. I'm working on 8.3.2.

Kevin Kenny of these newsgroups also previously posted this great
solution(compatible with 8.3.2)

    set newmac 123456abcdef
    set top 0x[string range $newmac 0 5]
    set bottom 0x[string range $newmac 6 11]

    set x [expr {$top*pow(2.,24)+$bottom}]
    set y [expr {floor($x/999979.)}]
    set modulus [expr {int($x-999899.*$y)}]

Thanks again!

Gordon

elf_ster@hotmail.com (Gordon) wrote in message news:<4a2e9945.0312071332.1caf497d@posting.google.com>...
> I'm a newbiew trying to get the modulus of a 32-bit number.
>
> (0x123456abcdef)mod(999899)
>
> I expected to do: set mod [expr 0x123456abcdef%999899] but I receive
> "integer value too large to represent".
>
> Any help greatly appreciated! TIA.
>
> Gordon

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