Return the kdb+ operating system version as a symbol.
q).z.o `w32 q)
current values are w32, w64, l32, l64, s32, s64(Solaris), v64(Solaris on Intel)
note this is the version of the kdb+ executable, NOT the os itself. You may be running both 32bit and 64bit versions of kdb+ on the same machine to support older external interfaces.
For a complete list of functions, see the kdb+ Function Reference.