Re: [QuantLib-svn] SF.net SVN: quantlib: [13098] trunk/QuantLib/ql/yieldtermstructures/ ratehelpers.cpp

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Re: [QuantLib-svn] SF.net SVN: quantlib: [13098] trunk/QuantLib/ql/yieldtermstructures/ ratehelpers.cpp

Luigi Ballabio
On Fri, 2007-10-19 at 03:38 -0700, [hidden email] wrote:
> Revision: 13098
>           http://quantlib.svn.sourceforge.net/quantlib/?rev=13098&view=rev
> Author:   nando
> Date:     2007-10-19 03:38:22 -0700 (Fri, 19 Oct 2007)
>
> Log Message:
> -----------
> partially reverted Rev13090, which has broken the 3M yield curve bootstrapping in QuantLibXL.
> Spread dynamically changes and could even be not available at construction time

That the spread is not available at construction time is not a problem.

The problem is the premature optimization in
RelativeDateRateHelper::update() which fails to call initializeDates if
the spread changes.

Luigi


--

Better to have an approximate answer to the right question than a
precise answer to the wrong question.
-- John Tukey as quoted by John Chambers



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