On windows, RUBY_FIXNUM_MAX of 64 bits ruby is 32 bits
On windows, start an IRB of a 64-bits ruby, enter these code:
(1<<29).equal?(1<<29) #=>true (1<<30).equal?(1<<30) #=>false
So, it is that FIXNUM of the 64-bits ruby is a 32-bits data?
But my friend try these code on linux platform and all got true(it means FIXNUM is 64bits)
Then I opened ruby/ruby.h and found this:
#define RUBY_FIXNUM_MAX (LONG_MAX>>1)
The LONG_MAX of my compiler(msvc140, vs2017) is 2147483647, and the ruby which is installed by ruby-installer also have the same problem.