eccodes/definitions/grib2/templates/template.3.resolution_flags.def

# (C) Copyright 2005- ECMWF.

flags[1] resolutionAndComponentFlags 'grib2/tables/[tablesVersion]/3.3.table' : edition_specific,no_copy;

# Note our flagbit numbers run from 7 to 0, while WMO convention uses 1 to 8
# (most significant to least significant)

flagbit resolutionAndComponentFlags1(resolutionAndComponentFlags,7) = 0: read_only; #Reserved
flagbit resolutionAndComponentFlags2(resolutionAndComponentFlags,6) = 0: read_only; #Reserved
flagbit iDirectionIncrementGiven(resolutionAndComponentFlags,5);
flagbit jDirectionIncrementGiven(resolutionAndComponentFlags,4);
flagbit uvRelativeToGrid(resolutionAndComponentFlags,3);
flagbit resolutionAndComponentFlags6(resolutionAndComponentFlags,2) = 0: read_only; #Reserved
flagbit resolutionAndComponentFlags7(resolutionAndComponentFlags,1) = 0: read_only; #Reserved
flagbit resolutionAndComponentFlags8(resolutionAndComponentFlags,0) = 0: read_only; #Reserved

concept ijDirectionIncrementGiven {
  '1' = {
    iDirectionIncrementGiven = 1;
    jDirectionIncrementGiven = 1;
  }
  '0' = {
    iDirectionIncrementGiven = 1;
    jDirectionIncrementGiven = 0;
  }
  '0' = {
    iDirectionIncrementGiven = 0;
    jDirectionIncrementGiven = 1;
  }
  '0' = {
    iDirectionIncrementGiven = 0;
    jDirectionIncrementGiven = 0;
  }
}

alias DiGiven=iDirectionIncrementGiven;
alias DjGiven=jDirectionIncrementGiven;