This is the list of warning messages from Microsoft cl compiler.
We should eliminate them. However, g++ compiles without any message
(even if --Wall / --pedantic specified).

examples/fp_comparator.cpp(52) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
src/mpfrcpp/real/real.hpp(491) : warning C4244: 'return' : conversion from 'long' to 'short', possible loss of data
src/mpfrcpp/real/real.hpp(532) : warning C4244: 'return' : conversion from 'unsigned long' to 'unsigned short', possible loss of data
src/mpfrcpp/real/stream.hpp(46) : warning C4800: 'int' : forcing value to bool 'true' or 'false' (performance warning)
src/mpfrcpp/test/function_table.hpp(41) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
src/mpfrcpp/test/function_table.hpp(52) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
src/mpfrcpp/test/function_table.hpp(64) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
src/mpfrcpp/test/function_table.hpp(65) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
src/mpfrcpp/test/random.hpp(44) : warning C4244: 'argument' : conversion from 'time_t' to 'unsigned int', possible loss of data
src/mpfrcpp/test/random.hpp(53) : warning C4244: 'argument' : conversion from 'time_t' to 'unsigned int', possible loss of data
src/nacre/polynomial.hpp(161) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
src/nacre/polynomial.hpp(259) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
src/nacre/polynomial.hpp(261) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
src/nacre/polynomial.hpp(265) : warning C4267: 'initializing' : conversion from 'size_t' to 'unsigned int', possible loss of data
src/nacre/polynomial.hpp(486) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
src/nacre/polynomial_orthogonal.hpp(94) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data