功能: 计算神经网络AntiSym激活函数

格式: NetFunByAntiSym(x)

x : 为矩阵变量或者数值

说明:
1. 函数执行成功返回和x同纬度的矩阵变量

2. 本函数主要计算的原理如下
$$\mathbf{NetFunByAntiSym}(x_i) = \dfrac{16x_i}{64 + x_i^2}$$

例子:
x =
[-0.73290256607947   -1.95092696112158    0.21744714338213    2.19789781453921
 -4.72275318588258    1.99957438581603    2.94959032789319   -4.31942455462153
 -6.10488919615973   -1.19050327068684   -6.38943656901337    2.98098757280083
 -2.76742173278119   -4.81647247463300   -3.72662812435377   -4.00467786914887 ]
y = NetFunByAntiSym(x, 3.6)//回车得到如下结果
y =
[-0.18170064455800   -0.46035421604789    0.05432165295726    0.51091064064598
 -0.87555272995929    0.47049986902202    0.64915256258809   -0.83611109300481
 -0.96453582909423   -0.29117760748946   -0.97525478609174    0.65438648595498
 -0.61791234385587   -0.88377256142678   -0.76553815581039   -0.80056086295550 ]