If you don't mind a compiled solution, my "ref" module adds the (read|write)Int64[BL]E functions to the Buffer object: https://github.com/TooTallNate/ref. You can pass in String representations of the int64 values and they will be dealt with in C-land.
On Wed, Jan 16, 2013 at 6:47 AM, Ben Noordhuis <[email protected]> wrote: > On Wed, Jan 16, 2013 at 11:25 AM, Cheng Shao <[email protected]> wrote: > > I'm trying out nodejs as a TCP server. i want to read unsigned 64bit > integer > > from Buffer. find not similar function. why not to be added? > > JS numbers are 64 bits doubles. That means you can't represent 64 bit > integers with them because they're only exact for integers up to 2^53. > > To illustrate: > > $ node > > Math.pow(2, 53) === Math.pow(2, 53) - 1 > false > > Math.pow(2, 53) === Math.pow(2, 53) > true > > Math.pow(2, 53) === Math.pow(2, 53) + 1 > true > > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
