Home/ Questions/Q 7709001
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-01T00:45:17+00:00

I wrote an optimization routine, and the tolerance disminishes at each iteration. Comparison is

  • 0

I wrote an optimization routine, and the tolerance disminishes at each iteration. Comparison is performed at each iteration with a threshold tolerance, 1e-10. I computed a log for the successive iterations, and observe that at some point, tolerance decreases a lot from one iteration to the next, and from 0.000573789 becomes -1.#IND (NaN, right?). And threshold is not detected. Iterations go further althought tolerance threshold has been met.

Should I compare current tolerance both with 1e-10 and with NaN? Where could the problem come from? All the things are double.

Thanks and regards.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You shouldn’t have a NaN in the first place. Enable signals for NaN, run in the debugger, and repair your code.

    You might find this article useful.

    • 0