From: fateman@cs.berkeley.edu   
      
   On 4/5/2016 9:47 AM, clicliclic@freenet.de wrote:   
      
   > The scheme is not very hard to implement and quite useful to have   
   > readily available. But perhaps one of the free Computer Algebra systems   
   > offers something like this already?   
   >   
   > Martin.   
   >   
   quite useful? Maybe not compared to a good quality numerical   
   polynomial root-finder.  Which I think all systems have, and are   
   probably much faster even if not exact.   
      
   This algorithm might have some relevance for   
     cylindrical algebraic decomposition, but CAD doesn't   
   seem to require it.   
   RJF   
      
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