odd using of macro MODLIMB_INVERSE_3

[Marco Bodrato]

Ciao,

> Il 2019-11-09 15:34 Andy ha scritto:
>> In file toom_interpolate_6pts.c is:
> 
>> #ifndef mpn_divexact_by3
>> #if HAVE_NATIVE_mpn_pi1_bdiv_q_1 && MODLIMB_INVERSE_3
> 
>> This can make some problems on some compilers.

I decided for the easiest solution: using in _6pts the same code used by 
_7pts and _8pts.

https://gmplib.org/repo/gmp/rev/dc44b59ee8db

Ĝis,
m