Files CCore/inc/math/IntegerFastAlgo.h CCore/src/math/IntegerFastAlgo.cpp
CCore provides a stub implementation of the integer fast algorithm package.
using IntegerFastAlgo = IntegerSlowAlgo<unsigned> ;
But any target should supply a proper implementation, specific to the target CPU. You may implement such package using the GMP library. You can find an example of it in the target WIN32.