bugGNU Scientific Library - Bugs: bug #50734, initialize newton, steffenson...


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bug #50734: initialize newton, steffenson solvers with GSL_FN_FDF_EVAL_F_DF

Submitter:  Leo Singer <lpsinger>
Submitted:  Wed 05 Apr 2017 05:36:34 PM UTC
Category:  Performance Severity:  3 - Normal
Operating System:  Status:  None
Assigned to:  None Open/Closed:  Open

Tue 11 Apr 2017 09:32:20 PM UTC, comment #1: 

What is this patch about? You have already replaced where these two macros are used with a single usage of another macro which covers both. So will this patch solve the initialization issue or what? Would you please explain more?

Danesh Daroui <dandan>
Wed 05 Apr 2017 05:36:34 PM UTC, original submission:  

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.

Leo Singer <lpsinger>


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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-04-05 lpsinger Attached File- Added 0001-initialize-newton-steffenson-solvers-with-GSL_FN_FDF.patch, #40269

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