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Re: Re: Bit by a Hex String

by abitkin (Monk)
on Aug 29, 2003 at 15:29 UTC ( [id://287711]=note: print w/replies, xml ) Need Help??


in reply to Re: Bit by a Hex String
in thread Bit by a Hex String

Okay, first I need to say, I love your BC solution. It's simple, and elegant. That being said I did some playing around with BigInt, so here's the code I came up with: 
sub shift_bs{
    $add = shift;
    $source = shift;
    $num1=Math::BigInt->new("0x".$source);
    $num1->blsft(1);
    $num1+=$add;
    $temp = $num1->as_hex();
    $temp =~ /0x(.*)/;
    return $1;
}

[download]
Yeah, the $add is a legacy thing, but that's okay. I want to thank you especially, because you went to quite a bit of work to come up with that code.
==
Kwyjibo. A big, dumb, balding North American ape. With no chin.

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Re: Bit by a Hex String
by Abigail-II (Bishop) on Aug 29, 2003 at 15:45 UTC 
    $num1=Math::BigInt->new("0x".$source);

    [download]

    Ah, I didn't know you could do that. The Math::BigInt manual page says: 

           Input
         Input values to these routines may be either Math::Big-
         Int objects or strings of the form
         "/^[+-]?[\d]+\.?[\d]*E?[+-]?[\d]*$/".

    [download]

    Abigail

[reply]
[d/l]
[select]
      Neither did I

      I only tried it after seeing this in the documentation:

      Examples for converting:

  my $x = Math::BigInt->new('0b1'.'01' x 123);
  print "bin: ",$x->as_bin()," hex:",$x->as_hex()," dec: ",$x,"\n";

      [download]

      ==
      Kwyjibo. A big, dumb, balding North American ape. With no chin.
[reply]
[d/l]

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