id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10046	halley iteration	Di <cao.96@…>	John Maddock	"When I use the halley iteration, it is coded as follows,

if(f1 != 0 && f2 != 0)
{
  // Oops zero derivative!!!
}
else
{
    if(f2 != 0)
    {
        ...
        T num = 2 * f1 - f0 * (f2 / f1);
        ...
    }
    else
    {
        delta = f0 / f1;
    }
}

But there is no case for f1 == 0, so this might cause division by zero.  The code should handle this case gracefully.
"	Bugs	closed	To Be Determined	math	Boost 1.55.0	Problem	fixed