This function projects a point in the plane onto the surface of a
Riemann Sphere, the one-point compactification of the complex plane.
Each finite point
z
projects to
z
itself.
Every complex infinite value is projected to a single infinite value,
namely to positive infinity on the real axis.
VERSIONS
These functions first appeared in glibc in version 2.1.
CONFORMING TO
C99.
NOTES
The glibc implementation is broken and does something entirely different.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.