C. Third Part of Each Chromosome

The third part of each chromosome denotes a special value corresponding to the cubic coefficients of the arguments in the piecewise-sine functions. According to the relation between *a<sup>i</sup>* <sup>3</sup>*<sup>j</sup>* and *a*3*spe*, *a*3*spe* is limited to be within [−*π*, 0) ∪ (0, *π*]. Moreover, optimization *a*3*spe* is constrained to be with an accuracy of 1*<sup>e</sup>* − 5, where 524, 288 = <sup>2</sup><sup>19</sup> < <sup>2</sup>*<sup>π</sup>* · <sup>10</sup><sup>5</sup> < 220 = 1, 048, 576. Hence, the genes of this part of the chromosome consist of 20 bits.

**Figure 6.** Eight categories of bytes and corresponding joint configurations.
