The math/big library has basic routines implemented in assembly for most common architectures, with all the math written in Go atop those.
Rémy. 2017-07-22 17:39 GMT+02:00 Hugh S. Myers <hsmy...@gmail.com>: > Is math/big pari based? > > On Sat, Jul 22, 2017 at 8:36 AM, Rémy Oudompheng <remyoudomph...@gmail.com> > wrote: >> >> 2017-07-22 17:19 GMT+02:00 Rémy Oudompheng <remyoudomph...@gmail.com>: >> > 2017-07-22 16:48 GMT+02:00 me <yout...@z505.com>: >> >> How does GoLang compare to other languages for mathematics dealing with >> >> really large numbers? >> >> >> >> Prefer the ability to work with 2GB sized strings as numbers (need much >> >> bigger than int64) >> >> >> >> I see there is this: >> >> https://golang.org/pkg/math/big/ >> >> >> >> And probably some other github projects for math in go? >> >> >> >> Is Python and Mathematica better at handling super large numbers? Plain >> >> C? >> >> C++ ? Javascript? >> >> >> >> I need to start working with some massive numbers, but am unsure to >> >> choose >> >> Go - as I don't have experience in Go Mathematics units yet. >> >> >> > >> > math/big is the standard package for big integer arithmetic in Go, and >> > it is quite fast. >> > For your huge numbers, it all depends on which operations you need to >> > do. >> > For example, the math/big package uses Karatsuba multiplication, which >> > cannot handle 2GB numbers in a reasonable amount of time. >> > >> > I wrote a little module (github/remyoudompheng/bigfft) to play with >> > FFT-based multiplication of huge integers, while maintaining >> > interoperability with the math/big package. >> > >> > On my computer, it multiplies 1Gbit numbers (300MB strings when >> > printed in base 10), in 24 seconds (the GMP library does it in 9.3 >> > seconds). I assume that it would multiply your 2GB strings (6 Gbit >> > numbers) in about 2 minutes. >> > >> > You are welcome to try it. >> > >> > Regards, >> > Rémy. >> >> The most annoying issue you might encounter is that if your 2GB >> strings are numbers printed in base 10, the math/big will not be able >> to parse them in a reasonable time using the standard method >> (SetString). >> >> Rémy. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
