Cool page about (semi)numerical algorithm, including a book in progress, an open source library and a number of interesting links. Also has a mirror of hakmem. The author has also published a book about pi.
Contains references to B. Smiths ZERPOL and Adam's stopping criterion. SMITH, B.T. ZERPOL, a zero finding algorithm for polynomials using Laguerre's method. Proc. 1967 Army Numerical Analysis Conference, Madison, Wis., May 1967 (Rep. 67-3, US Army Res. O