AIRES library reference: crorecnumber.

c
c     Routine directly callable from C/C++ (it could be necessary to
c     append an underscore, "_", to its name depending on the C/C++
c     compiler used).
c
c
      function crorecnumber(fileid, vrb, irc)
c
c     Returning the current record number corresponding to a currently
c     opened compressed file.
c
c     Written by: S. J. Sciutto, La Plata 1997, 2010.
c
c
c     Arguments:
c     =========
c
c     fileid.......... (input, integer) Compressed file number. This
c                      parameter identifies the file to be used for
c                      reading, and is set by the file opening
c                      routine.
c     vrb............. (input, integer) Verbosity control. If vrb is
c                      zero or negative then no error/informative
c                      messages are printed; error conditions are
c                      communicated to the calling program via the
c                      return code. If vrb is positive error messages
c                      will be printed: vrb = 1 means that messages
c                      will be printed even with successful operations.
c                      vrb = 2,3 means that only error messages will
c                      be printed. vrb > 3 is similar to vrb = 3, but
c                      with the additional action of stopping the
c                      program if a fatal error takes place.
c     irc............. (output, integer) Return code. 0 means
c                      successful return.
c
c     Return value: (Integer) The record number. If the file is not
c     ============  ready (closed or end of file), then -1 is retuned.
c
c
c<--->

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