I am updating the boost library to latest version for our source code and came across this problem where the last parameter to gamma_imp() function (present in <boost\math\special_functions\gamma.hpp>) isn't available in boost anymore.
The last parameter is a variable of type boost::math::lanczos::lanczos22.
But the lanczos22class that used to be declared in <boost\math\special_functions\lanczos.hpp> isn't available in the latest version anymore.
I tried to look at the release notes in https://www.boost.org/users/history/version_1_78_0.html and it doesn't have any information on it.
How do I go about this issue? Thanks in advance for the suggestions.