On Sun, May 12, 2013 at 9:02 PM, Nikita Popov <nikita....@gmail.com> wrote:
> I think this is a misunderstanding. I do not suggest to use GMP for all > arithmetic and also do not suggest to auto-promote to GMP for large numbers. > > The operator overloading only comes into play if one of the operands is > already a GMP instance. > > Regarding performance: The addition of the operator overloading does have > a measurable impact on performance. > Ooops, that was a typo. I wanted to say "does NOT have a measurable impact on performance". > The switch of GMP from resources to objects also does not show any clear > change either way. What does become faster is if a gmp function gets a > non-gmp argument and needs to cast it to GMP (this is faster because now > only the mpz_t instance is created and not a full resource). Obviously when > the overloaded operators are used rather than the functions it's faster too. > I tweaked the implementation a bit and now it seems to be faster in any case. I added some numbers in https://wiki.php.net/rfc/operator_overloading_gmp#performance Nikita
