• FixedPoint[f, expr] starts with expr, then applies f repeatedly until the result no longer changes.
• FixedPoint[f, expr, n] stops after at most n steps.
• FixedPoint always returns the last result it gets.
• You can use Throw
to exit from FixedPoint
before it is finished.
• FixedPoint[f, expr]
to successive pairs of results to determine whether a fixed point has been reached.
• NestWhile[f, expr, comp, 2] provides a way to use a general comparison function.
• New in Version 1; modified in 3.