cdm/src/main/java/ucar/nc2/util/Misc.java
static public boolean compare(byte[] raw1, byte[] raw2, Formatter f) {
    if (raw1 == null || raw2 == null) return false;

    if (raw1.length != raw2.length) {
      f.format("length 1= %3d != length 2=%3d%n", raw1.length, raw2.length);
    }
    int len = Math.min(raw1.length, raw2.length);

    int ndiff = 0;
    for (int i = 0; i < len; i++) {
      if (raw1[i] != raw2[i]) {
        f.format(" %3d : %3d != %3d%n", i + 1, raw1[i], raw2[i]);
        ndiff++;
      }
    }
    f.format("tested %d bytes  diff = %d %n", len, ndiff);
    return ndiff == 0 && (raw1.length == raw2.length);
  }
static public boolean compare(byte[] raw1, byte[] raw2, Formatter f) {
    if (raw1 == null || raw2 == null) return false;

    if (raw1.length != raw2.length) {
      f.format("length 1= %3d != length 2=%3d%n", raw1.length, raw2.length);
    }
    int len = Math.min(raw1.length, raw2.length);

    int ndiff = 0;
    for (int i = 0; i < len; i++) {
      if (raw1[i] != raw2[i]) {
        f.format(" %3d : %3d != %3d%n", i + 1, raw1[i], raw2[i]);
        ndiff++;
      }
    }
    f.format("tested %d bytes  diff = %d %n", len, ndiff);
    return ndiff == 0 && (raw1.length == raw2.length);
  }
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