Compilare: main.cpp: In instantiation of 'void PrimeSieve<NMAX>::applyQuickMask(int) [with long unsigned int NMAX = 156252ul]': main.cpp:100:27: required from 'PrimeSieve<NMAX>::PrimeSieve(int) [with long unsigned int NMAX = 156252ul]' main.cpp:131:29: required from here main.cpp:61:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(size_t i = p; i < 2 * 64 * p; i += 2 * p) ~~^~~~~~~~~~~~ main.cpp:81:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(maskIndex == p) ~~~~~~~~~~^~~~