On 20/04/2023 16:58, Gero Peterhoff via Boost-users wrote:

Hi John, some functions do not work with multiprecision-integer-types, e.g.

using T = boost::multiprecision::int256_t; using ::std::isinf;

const auto x = T{5}; const auto y = isinf(x); // ct error std::cout << y << std::endl;

gives a CT error.

Correct.  Those functions are pretty meaningless in the context of integer types, and no one has ever asked for them. John.