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Algorithm turns into infinite loop and never finishes #3

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jcb-entrnce opened this issue Jan 21, 2021 · 2 comments
Open

Algorithm turns into infinite loop and never finishes #3

jcb-entrnce opened this issue Jan 21, 2021 · 2 comments

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@jcb-entrnce
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jcb-entrnce commented Jan 21, 2021 •
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When tot at Cobyla.java:879 is very small, this line evaluates to temp = 0.0. This causes line 880 to divide by zero, evaluating to alpha = NaN. This eventually causes both step and stepful to both be NaN, which causes Cobyla.java:1165 to always evaluate to false (because (NaN == NaN) == false), looping forever.

This is annoying since it makes the algorithm unusable for production purposes.
@xypron
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xypron commented Jan 21, 2021

@jcb-entrnce
Thank you for reporting the issue. If you have an idea, how to fix this, please, provide a pull request.

@jcb-entrnce
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jcb-entrnce commented Jan 21, 2021 •
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@xypron Please see #4

This was referenced Mar 9, 2023
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This was referenced Sep 20, 2023
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@zaikunzhang zaikunzhang mentioned this issue Oct 18, 2023
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This was referenced Jan 7, 2024
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@xypron @jcb-entrnce