size of fixnums

[Stefan Israelsson Tampe]

Hi,

I noticed that sending a fixnum 6bytes long to guile returned a
truncated fixnum of 4 of 4 bytes. I guess that this would not break
the numeriks but it looks like we are wasting space here and/or clock 
cycles.

The suspicius part is line  66 in numbers.h

#define SCM_MOST_POSITIVE_FIXNUM ((SCM_T_SIGNED_BITS_MAX-3)/4)

which means that trunkation will be at 4bytes on a 64bit system.
I changed 4 to 2 (mayby unsafe in corner cases) and the truncation
disapeared.

So Bugg Feature?

Regards
Stefan