missing underscore in type definition when compiling for w64

[jaromil]

Hi there! thanks for frozen!

this line

frozen/frozen.c

Line 47 in d763609

typedef _int64 int64_t;

should typedef __int64 to correctly compile for win 64bit according to my tests, conducted using mingw32 in cross-compilation to target w64.

[cpq]

PR please. make sure that the unit test (which uses clang, gcc, VC6 and VC2015) continues to pass.

[jaromil]

OK, is there a CI running the tests? I'm unable to run them locally since I don't have VC.