MSG_IFLEV - Return the current filter level for conditional message output

Description:

The value of the current filtering level set for conditional message output is returned. The collating sequence:

MSG__QUIET $<$ MSG__NORM $<$ MSG__VERB

may be assumed.

Invocation:

CALL MSG_IFLEV( FILTER )

Arguments:

FILTER = INTEGER (Returned)

The current message filtering level.