format  void MTH_InitialRand (Uint32 initVal)
 Input  initVal: Initial parameter value for random number generation
 Output  None
 Function value  None
 Function  Sets the initial parameter for calculating the random number returned by MTH_GetRand. This initialization routine
If you do not call  Chin , the initial parameter value for random number calculation is 0. 

  format  Uint32 randVal = MTH_GetRand (void)
 Input  None
 Output  None
 function value  randVal: random value from 0x00000000 to 0xffffffff
 Function  Returns a random value for each call.