Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Re^2: Locating a specified number of contiguous 0 bits within a large bitstring efficiently.

by BrowserUk (Patriarch)
on Jun 07, 2013 at 06:04 UTC ( [id://1037589]=note: print w/replies, xml ) Need Help??


in reply to Re: Locating a specified number of contiguous 0 bits within a large bitstring efficiently.
in thread Locating a specified number of contiguous 0 bits within a large bitstring efficiently.

This works perfectly, and fairly quickly. Thankyou.


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
  • Comment on Re^2: Locating a specified number of contiguous 0 bits within a large bitstring efficiently.

Replies are listed 'Best First'.
Re^3: Locating a specified number of contiguous 0 bits within a large bitstring efficiently.
by wrog (Friar) on Jun 07, 2013 at 08:25 UTC
    I don't see how this can work for $N<8; in fact, it doesn't:
    match_0s(1,"\201\201\201\201") => -1

      Oops, thanks for catching that.

      I edited my previous post.

      Indeed. My benchmark code was using a random generator that was not producing values < 8. Now fixed. Thanks.


      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://1037589]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others romping around the Monastery: (2)
As of 2024-04-19 21:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found