[Bug-gsl] [bug #49465] initialize newton and steffenson solvers with GSL_FN_FDF_EVAL_F_DF

[Leo Singer]

URL:
  <http://savannah.gnu.org/bugs/?49465>

                 Summary: initialize newton and steffenson solvers with 
GSL_FN_FDF_EVAL_F_DF
                 Project: GNU Scientific Library
            Submitted by: lpsinger
            Submitted on: Fri 28 Oct 2016 08:15:20 AM GMT
                Category: Performance
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: 
         Discussion Lock: Any

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Details:

The attached patch causes the Newton and Steffenson one-dimensional root
finders to initialize using GSL_FN_FDF_EVAL_F_DF rather than GSL_FN_FDF_EVAL_F
and GSL_FN_FDF_EVAL_DF. This should result in faster initialization for
problems where the function and derivative are expensive to evaluate and
involve redundant calculations.



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File Attachments:


-------------------------------------------------------
Date: Fri 28 Oct 2016 08:15:20 AM GMT  Name:
0001-initialize-newton-steffenson-solvers-with-GSL_FN_FDF.patch  Size: 1kB  
By: lpsinger

<http://savannah.gnu.org/bugs/download.php?file_id=38826>

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