Arguments

 

value

   An object of type double that is converted to a null-terminated
   string of ASCII digits.
 

ndigits

   The number of ASCII digits to be used in the converted string.
 

decpt

   The position of the decimal point relative to the first character
   in the returned string. A negative int value means that the
   decimal point is decpt number of spaces to the left of the
   returned digits (the spaces being filled with zeros). A 0 value
   means that the decimal point is immediately to the left of the
   first digit in the returned string.
 

sign

   An integer value that indicates whether the value argument is
   positive or negative. If value is negative, the function places
   a nonzero value at the address specified by sign. Otherwise, the
   function assigns 0 to the address specified by sign.