[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
## Re: [Help-gsl] Semantics of gsl_siman_metric_t

**From**: |
Marco Maggi |

**Subject**: |
Re: [Help-gsl] Semantics of gsl_siman_metric_t |

**Date**: |
Wed, 22 Dec 2010 20:59:34 +0100 |

"Saqib Ilyas" wrote:
>* The documentation says that the GSL Simulated Annealing*
>* function gsl_siman_metric_t(void *xp, void *yp), should*
>* return the distance between two configurations xp and*
>* yp. Semantically, should it be, x - y or y - x?*
Probably it was meant to be "x-y", but notice that the
metric function is used only for logging by
gsl_siman_solve_many(), that is when the "print_position"
argument is not NULL. So if you do not use printing with
solve_many, just ignore the metric function.
HTH
--
Marco Maggi