format  Fixed32 result = MTH_Mul (Fixed32 a, Fixed32 b)
 Input  a: Multiplicand
 B  b: Multiplier
 Output  None
 Function value  result: Multiplication result
 Function  Performs fixed-point multiplication. 

  format  Fixed32 result = MTH_Div (Fixed32 a, Fixed32 b)
 Input  a: Dividend
 B  b: Divisor
 Output  None
 function value  result: division result
 Function  Performs fixed-point division processing. 

  format  float b = MTH_FLOAT (Fixed32 a)
 Input  a: Fixed point data
 Output  None
 Function value  b: Type conversion result to floating point
 Function  This is a type conversion macro from fixed point to floating point format. 

  format  Fixed32 b = MTH_FIXED (float a)
 Input  a: Floating point data
 Output  None
 Function value  b: Type conversion result to fixed point
 Function  Type conversion macro from floating point to fixed point format.