If the value < 0.0:
    Insert - into string
    Subtract value from 0.0 to make it positive.
While the value <= 10.0:
    Divide by 10
    Increment decimal counter
For each digit of required precision:
    Take the integer portion of the value and place it in the string
    Decrement decimal counter
    If decimal counter is 0:
        Insert decimal point
    Multiply the value by 10.