/* Symmetrical Dequantization reference: Section 7.3.3 Expansion of Mantissas for Symmetrical Quantization Tables 7.19 to 7.23  */
static int symmetric_dequant(int code, int levels)
/* Symmetrical Dequantization reference: Section 7.3.3 Expansion of Mantissas for Symmetrical Quantization Tables 7.19 to 7.23  */
static int symmetric_dequant(int code, int levels)
{
    return ((code - (levels >> 1)) << 24) / levels;
}