visad/src/main/java/ucar/nc2/iosp/gempak/GempakFileReader.java
public float[] getFileHeader(String name) throws IOException {
    DMFileHeaderInfo fh = findFileHeader(name);
    if ((fh == null) || (fh.kfhtyp != MDREAL)) {
      return null;
    }
    int knt = fileHeaderInfo.indexOf(fh);  // 0 based
    int iread = dmLabel.kpfile + 3 * dmLabel.kfhdrs;
    for (int i = 0; i < knt; i++) {
      DMFileHeaderInfo fhi = fileHeaderInfo.get(i);
      iread = iread + fhi.kfhlen + 1;
    }
    int nword = DM_RINT(iread);
    if (nword <= 0) {
      logError("Invalid header length for " + name);
      return null;
    }
    iread++;
    float[] rheader = new float[nword];
    if (name.equals("NAVB") && needToSwap) {
      DM_RFLT(iread, 1, rheader, 0);
      needToSwap = false;
      iread++;
      DM_RFLT(iread, 1, rheader, 1);
      needToSwap = true;
      iread++;
      DM_RFLT(iread, nword - 2, rheader, 2);

    } else {
      DM_RFLT(iread, rheader);
    }
    return rheader;
  }
public float[] getFileHeader(String name) throws IOException {
    DMFileHeaderInfo fh = findFileHeader(name);
    if ((fh == null) || (fh.kfhtyp != MDREAL)) {
      return null;
    }
    int knt = fileHeaderInfo.indexOf(fh);  // 0 based
    int iread = dmLabel.kpfile + 3 * dmLabel.kfhdrs;
    for (int i = 0; i < knt; i++) {
      DMFileHeaderInfo fhi = fileHeaderInfo.get(i);
      iread = iread + fhi.kfhlen + 1;
    }
    int nword = DM_RINT(iread);
    if (nword <= 0) {
      logError("Invalid header length for " + name);
      return null;
    }
    iread++;
    float[] rheader = new float[nword];
    if (name.equals("NAVB") && needToSwap) {
      DM_RFLT(iread, 1, rheader, 0);
      needToSwap = false;
      iread++;
      DM_RFLT(iread, 1, rheader, 1);
      needToSwap = true;
      iread++;
      DM_RFLT(iread, nword - 2, rheader, 2);

    } else {
      DM_RFLT(iread, rheader);
    }
    return rheader;
  }
Read in the values for the file header

@param name name of header
@return values or null if not found
@throws IOException problem reading file