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From: | Rhys Ulerich |
Subject: | [Bug-gsl] [bug #39713] roots/secant.c "derivative value is not finite" for a good guess |
Date: | Wed, 02 Oct 2013 15:43:14 +0000 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.63 Safari/537.31 |
Follow-up Comment #8, bug #39713 (project gsl): > As for duplicated evalution, gsl_root_fsolver_root returns the root without requiring an additional function evaluation. The root doesn't need to be exposed directly to the user through the iteration API as an accessor is available to get it at near-zero cost. Again, one could imagine a different API but this is what's in-place now. You can see this routine exercised in the examples and the source code in fsolver.c. I apologize and retract all of this. I mixed up root and function evaluation. Sorry. Could one build something similar atop the solver-specific state? _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?39713> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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