Report the seconds and microseconds values from the INSN_GTOD
instructions as unsigned values to postpone the Y2038 problem to a Y2106
problem. Be a bit more careful with the conversion to a signed
difference. We wouldn't normally expect time to go backwards, but it is
possible if the system time is set to to an older time between the
instructions.
Also, in the description of INSN_GTOD in the Comedilib manual,
explicitly mention that the seconds and microseconds values are
unsigned.
Mention that the stuff that relies on the COMEDI_TRIG ioctl, including
the slowly varying input (comedi_sv_...) functions no longer work with
current versions of the Comedi kernel layer.
Removed subdevice_struct as it is internal to comedilib. Removed
struct comedi_t_struct, leaving only the comedi_t typedef as
applications only see it as a pointer to an opaque, incomplete type.
dblatex -t pdf ./comedilib.xml
There were two major issues in the comedilb.xml:
1) there were too many nested sections so that
latex ran out of sub-sub-sub-sub-sections.
2) A section needs a title and can no longer
exist without one. The first line
of the textfiles contains now the title
and will be inserted by mkref into the xml file.
todo: switch from xmlto to dblatex for the pdf generation
and re-enable it in the makefile.
