On 21/07/2021 19:07, Stefano Gragnani via Boost-users wrote:
further clarification if possible:
why the 2 lines that don't compile:
// float128 e1 = exp(1.Q); // Note argument to exp is type float128. // std::cout << e1 << std::endl; // 2.71828182845904523536028747135266231
if i put them in the following code compile regularly?
You're mixing up 2 different things: * If you want to use __float128 "as if" it were no different to float/double etc, then include boost/math/cstdfloat.hpp * If you want a 128-bit floating point type which hides the underlying implementation then use boost/multiprecision/float128.hpp. Note that these are completely different approaches to the same problem, and are completely different types. Also note that strictly speaking, boost/math/cstdfloat.hpp is NOT C++ conformant, as it adds function overloads directly to namespace std. -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus