It just says that the value is in that interval, so it is not wrong. There is no canonical way to cut the plane into strips, either the top is half-open or the bottom. On Wed, Nov 1, 2023 at 1:08 PM Alejandro Colomar via Libc-help <libc-help@xxxxxxxxxxxxxx> wrote: > > On Wed, Nov 01, 2023 at 03:25:46PM +0000, Helge Kreutzmann wrote: > > Hello Alejandro, > > Am Wed, Nov 01, 2023 at 04:00:16PM +0100 schrieb Alejandro Colomar: > > > On Wed, Nov 01, 2023 at 02:02:10PM +0000, Helge Kreutzmann wrote: > > > > Without further ado, the following was found: > > > > > > > > Issue: [-pi,pi] means both -pi and pi are included, this does not make sense, either one must be out of the interval? > > > > > > > > "The logarithm B<clog>() is the inverse function of the exponential " > > > > "B<cexp>(3). Thus, if I<y\\ =\\ clog(z)>, then I<z\\ =\\ cexp(y)>. The " > > > > "imaginary part of I<y> is chosen in the interval [-pi,pi]." > > > > > > I don't know this function. Please suggest a fix, and CC glibc so that > > > they can review the change. > > > > From a mathematical point of view either -pi or pi needs to be > > excluded. I'm not a programmer, so the I cannot tell which is the case > > here. > > > > So you need to contact the person who wrote or who maintains this > > function / man page. > > Hi, > > I'm CCing glibc, in case they want to say something. > > Cheers, > Alex > > -- > <https://www.alejandro-colomar.es/>