Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

 ◄Detail►                                    ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
  Title:    Y log(sub2)(X+1)
 
  Syntax:   FYL2XP1
 
  See also: FYL2X, F2XM1
 
  Description:
 
     Calculates Z = Y log(sub2)(X + 1) where X is taken from ST and Y
     from ST(1). The stack is popped once and the result, Z, replaces Y
     in ST. X must be in the range 0 <= |X| < (1 - (SQRT2 / 2)) and Y in
     the range minus infinity < Y < infinity.
                                    -♦-