[Fluxus] osc-send negative numbers

[gabor papp]

> I forget the details, but I had some problems with this a while back due
> to needing to send NTP timestamps - hence the rather iffy fix. I'll check
> your code and see what happens, but I think that long is 32bit on intel,
> so I might need to change it to long long, or something.
i just changed scheme_get_unsigned_int_val to scheme_get_int_val in the 
code. these functions return long or unsigned long, both are 32-bit on 
intel. according to inside plt mzscheme: "MzScheme expects to be 
compiled in a mode where short is a 16-bit integer, int is a 32-bit 
integer, and long has the same number of bits as void*."

so, i think it works fine if used with 32-bit values. aren't ntp 
timestamps 64-bit?

32-bit ints are fine with osc, because they are sent with the 'i' type 
tag, which is 32-bit. (http://opensoundcontrol.org/spec-1_0)

if we want to send 64-bit values, we should use the 'h' type tag and use 
long long with scheme_get_long_long_val.

best,
gabor