code: func (f PackedFormat) IsSupported(bitsPerValue int) bool {
  	switch int(f) {
  	case PACKED_SINGLE_BLOCK:
  		return is64Supported(bitsPerValue)
  	}
  	return bitsPerValue >= 1 && bitsPerValue <= 64
  }
docs: /**
   * Tests whether the provided number of bits per value is supported by the
   * format.
   */