128 bits integers with gcc

gcc offers the possibility to work with 128 bits integers using two 64 bits words. <source lang="cpp">

        __int128_t a = -10293840984;

unsigned __int128_t b = 10293840984; </source>

similarly __float128 exists for floating numbers on 128 bits integers.

For Quadruple precision calculation: gcc offers a library for mathematics functions :

• libquadmath