{

std::mt19937_64 rng(42);

std::uniform_real_distribution<float> dist (1e10F, 1e12F);

for (int i = 0; i < 1024; ++i)

{

char buffer[256] {};

auto val = static_cast<std::bfloat16_t>(dist(rng));

auto r = boost::charconv::to_chars(buffer, buffer + sizeof(buffer), val, boost::charconv::chars_format::scientific);

if (!(BOOST_TEST(r) && BOOST_TEST(std::strlen(buffer) <= 9))) // 4 digits prec + period + e+ + 2 digits of exp

{

std::cerr << "Incorrect for: " << val << " returned: " << buffer << std::endl; // LCOV_EXCL_LINE

}

}

return boost::report_errors();