function EncodedCartesian3() {
  /**
   * The high bits for each component.  Bits 0 to 22 store the whole value.  Bits 23 to 31 are not used.
   *
   * @type {Cartesian3}
   * @default {@link Cartesian3.ZERO}
   */
  this.high = Cartesian3.clone(Cartesian3.ZERO);

  /**
   * The low bits for each component.  Bits 7 to 22 store the whole value, and bits 0 to 6 store the fraction.  Bits 23 to 31 are not used.
   *
   * @type {Cartesian3}
   * @default {@link Cartesian3.ZERO}
   */
  this.low = Cartesian3.clone(Cartesian3.ZERO);
}
A fixed-point encoding of a {@link Cartesian3} with 64-bit floating-point components, as two {@link Cartesian3}
values that, when converted to 32-bit floating-point and added, approximate the original input.
<p>
This is used to encode positions in vertex buffers for rendering without jittering artifacts
as described in {@link http://help.agi.com/AGIComponents/html/BlogPrecisionsPrecisions.htm|Precisions, Precisions}.
</p>

@alias EncodedCartesian3
@constructor

@private