Re: Issue in man page clog.3

Jakub Wilk
2023-11-01T16:23:37Z

* Helge Kreutzmann <debian@helgefjell.de>, 2023-11-01 14:02:
>Issue: [-pi,pi] means both -pi and pi are included, this does not make sense, either one must be out of the interval?

The man page is consistent with the C standard, which says the return
value is "in the interval [−iπ, +iπ] along the imaginary axis".

I think they mean π rounded to the nearest representable value.
And indeed, the imaginary part of clog(-1 - DBL_EPSILON * I) is -M_PI,
and the imaginary part of clog(-1 + DBL_EPSILON * I) is +M_PI.

--
Jakub Wilk