src/main/java/org/apache/datasketches/vector/decomposition/PreambleUtil.java [185:198]:
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  static void insertPreLongs(final Object memObj, final long memAddr, final int preLongs) {
    unsafe.putByte(memObj, memAddr + PREAMBLE_LONGS_BYTE, (byte) preLongs);
  }

  static void insertSerVer(final Object memObj, final long memAddr, final int serVer) {
    unsafe.putByte(memObj, memAddr + SER_VER_BYTE, (byte) serVer);
  }

  static void insertFamilyID(final Object memObj, final long memAddr, final int matrixFamId) {
    unsafe.putByte(memObj, memAddr + FAMILY_BYTE, (byte) matrixFamId);
  }

  static void insertFlags(final Object memObj, final long memAddr, final int flags) {
    unsafe.putByte(memObj, memAddr + FLAGS_BYTE, (byte) flags);
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src/main/java/org/apache/datasketches/vector/matrix/MatrixPreambleUtil.java [175:188]:
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  static void insertPreLongs(final Object memObj, final long memAddr, final int preLongs) {
    unsafe.putByte(memObj, memAddr + PREAMBLE_LONGS_BYTE, (byte) preLongs);
  }

  static void insertSerVer(final Object memObj, final long memAddr, final int serVer) {
    unsafe.putByte(memObj, memAddr + SER_VER_BYTE, (byte) serVer);
  }

  static void insertFamilyID(final Object memObj, final long memAddr, final int matrixFamId) {
    unsafe.putByte(memObj, memAddr + FAMILY_BYTE, (byte) matrixFamId);
  }

  static void insertFlags(final Object memObj, final long memAddr, final int flags) {
    unsafe.putByte(memObj, memAddr + FLAGS_BYTE, (byte) flags);
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