Introduction - If you have any usage issues, please Google them yourself
Function for float fun (double h), the function of function: The value of the variable h in the retention of two decimals, and rounding to the third (of the value of h provides a positive number). For example: If the h value of 8.32433, the function returns 8.32 if the h value of 8.32533, the function returns 8.33.