This module wraps all of the 'mpf' (floating point) functions that the Gnu MP (GMP) library provides. It requires gmp-4.2.0 or later. You therefore need the GMP library installed on your computer. See: https://gmplib.org/ To build this module you need perl 5.6.0 or later. I'm not sure of all the requirements to get it to build with earlier versions of perl, but it's definite that the XS code relating to operator overloading will not compile with perl versions prior to 5.6. No OO interface - just plain access to GMP's floating point functions. Build in the usual way: perl Makefile.PL make make test make install When building this module, the GMP library will need to be accessible. If it's in a location where your compiler does not find it by default, then instead of running 'perl Makefile.PL', you'll need to run: perl Makefile.PL INC="-I/path/to/gmp_include" LIBS="-L/path/to/gmp_lib -lgmp" =================================================== 64-bit integer, long double, and __float128 support =================================================== If your perl's Config reports that 'ivsize' >= 8 && 'ivtype' is not 'long' then Math::GMPf will, by default, be built to enable you to assign. pass, and retieve 64-bit long long int values. Similarly, if your perl's Config reports that 'nvtype' is long double, then Math::GMPf will, by default, be built to enable you to assign, pass, and retrieve long double values. Or, ifperl's Config reports that 'nvtype' is __float128, then Math::GMPf will, by default, be built to enable you to assign, pass and retrieve __float128 values. I am contactable by email at sisyphus at(@) cpan dot (.) org. ========== MAC OS X ========== If you have MacPorts installed, you may need to install gmp +universal for the bindings to work. After installing you'll need to run: perl Makefile.PL INC="-I/opt/local/include" LIBS="-L/opt/local/lib -lgmp" =============================== MS WINDOWS (Visual Studio 2019) =============================== I don't know how to build the gmp library using Visual Studio 2019, so when building this module with Visual Studio 2019 I build against a gmp library that was built using MinGW-w64. Building with Visual Studio 2019 against a *dynamic* gmp library that was built using a MinGW-w64 compiler is not recommended, as strange results can then arise when calling gmp functions that take a FILE* argument. If building with Visual Studio 2019 against a static gmp library that was built using a MinGW-w64 compiler I first make a copy of the gmp library (libgmp.a) along with copies of the following MinGW-w64 library files: libgcc.a libmingwex.a libmingw32.a For each of the 4 copied files, I leave the filename unchanged (though the "lib" at the begining of the name is optional), and change the file extension to ".lib". In making those copies, I've left them in the same directory as the original, but I assume (untested) that the copies could be moved to any location of your choice. Then build this module by cd'ing to the top level Math::GMPz source folder and running: perl Makefile.PL INC="-IC:/path/to/gmp_header" LIBS="-LC:/path/to/libgcc -lgcc -LC:/path/to/standard_libs -lmingwex -lmingw32 -LC:/path/to/libgmp -lgmp" nmake test nmake install NOTES: 1) The given example "perl Makefile.PL ..." command assumes that libmingwex and libmingw32 libraries are in the same location.