NAME
comedi_loglevel - change Comedilib logging properties
SYNOPSIS
#include <comedilib.h>
int comedi_loglevel (int loglevel);
DESCRIPTION
This function affects the output of debugging and error messages from
Comedilib. By increasing the loglevel, additional debugging
information will be printed. Error and debugging messages are printed
to the stream stderr.
The default loglevel can be set by using the environment variable
COMEDI_LOGLEVEL. The default loglevel is 1.
In order to conserve resources, some debugging information is disabled
by default when Comedilib is compiled.
The meaning of the loglevels is as follows:
COMEDI_LOGLEVEL=0 Comedilib prints nothing.
COMEDI_LOGLEVEL=1 (default) Comedilib prints error messages when there
is a self-consistency error (i.e., an internal bug.)
COMEDI_LOGLEVEL=2 Comedilib prints an error message when an invalid
parameter is passed.
COMEDI_LOGLEVEL=3 Comedilib prints an error message whenever an error
is generated in the Comedilib library or in the C library, when called
by Comedilib.
COMEDI_LOGLEVEL=4 Comedilib prints a lot of junk.
RETURN VALUE
This function returns the previous loglevel.
28 October 2007