having a "bigintmax_t" would...... work, but it's absolutely horrible and defeats the purpose of intmax_t being.. um.. the maximum integer type. A struct of tw

having a "bigintmax_t" would...... work, but it's absolutely horrible and defeats the purpose of intmax_t being.. um.. the maximum integer type. A struct of two integers couldn't be used in regular & bitwise arithmetic, added to pointers, index arrays, cast up and down to other integer types, etc. As-is, you can pass in & out intmax_t as a default case and, worst-case, you just waste space. But "uint128_t a = ~UINTMAX_C(0)" not making a variable of all 1s bits would be just straight up broken.