GNU MPFR looks solid too, significantly faster because it uses base 2 storage, but may have difficulty converting to decimal. I'll fork a version that uses mpfr instead of libmpdec and add it to the benchmark. I know using basic + and - isn't much of a benchmark but it's a start.
I believe that many projects, especially in finance and science, can benefit from a fast, friendly, PHP 7+ decimal library. On Sat, Sep 29, 2018, 10:25 Rudi Theunissen <rtheunis...@php.net> wrote: > I wrote a basic benchmark and GMPi appears to be about twice as fast (+ > and - ops) but produces a different result. GMPi was also running out of > memory when attempting to apply multiply and divide operators. The > benchmark only uses + and - now. > > I used bcmath for the reference value. > > If there's a bug we can solve here, rather than a fundamental accuracy > issue, GMPi looks promising. 😊 > > See: https://gist.github.com/rtheunissen/973ea1719c02a4204dabfe9dffd78c4b > > > On Sat, Sep 29, 2018, 07:20 Sara Golemon <poll...@php.net> wrote: > >> On Fri, Sep 28, 2018 at 6:06 PM Rudi Theunissen <rtheunis...@php.net> >> wrote: >> > I've been working on adding arbitrary precision decimal support as an >> > alternative to *bcmath. *I have created an extension based on >> *mpdecimal*, >> > which is what Python 3's decimal module is also based on. I haven't >> > released or broadcast this project yet, because I wanted to discuss the >> API >> > and implementation with internals first. >> > >> Have you looked at GMPi ? https://github.com/sgolemon/gmpi >> It's a replacement for GMP (which includes floating point and an OOP >> interface). >> >> -Sara >> >
