[Bug-gsl] [bug #50734] initialize newton, steffenson solvers with GSL_FN_FDF_EVAL_F_DF

[Leo Singer]

URL:
  <http://savannah.gnu.org/bugs/?50734>

                 Summary: initialize newton, steffenson solvers with
GSL_FN_FDF_EVAL_F_DF
                 Project: GNU Scientific Library
            Submitted by: lpsinger
            Submitted on: Wed 05 Apr 2017 05:36:34 PM UTC
                Category: Performance
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: 
         Discussion Lock: Any

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Details:

These were the only places in these two solvers where GSL_FN_FDF_EVAL_F or
GSL_FN_FDF_EVAL_DF were used independently. If the function or its derivative
shared some expensive calculations in common, then this could lead to
inefficient initialization of the solver.

See attached patch.



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File Attachments:


-------------------------------------------------------
Date: Wed 05 Apr 2017 05:36:34 PM UTC  Name:
0001-initialize-newton-steffenson-solvers-with-GSL_FN_FDF.patch  Size: 1kB  
By: lpsinger

<http://savannah.gnu.org/bugs/download.php?file_id=40269>

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