包含了当代科学计算过程中涉及的大量内容：求特殊函数值、随机数、排序、最优化、快速傅里叶变换、谱分析、小波变换、统计描述和数据建模、偏微分方程数值解、若干编码算法和任意精度计算等-Includes calculation of contemporary science involved substantial elements: seeking a special function values, random numbers, sorting, optimization, fast Fourie

小波分解，得到低频系数并求特征熵，可用来对信号进行分选识别-Wavelet decomposition, low coefficient and entropy, which can be used for signal sorting and recognition