The
catan()
function calculates the complex arc tangent of
z.
If y = catan(z), then z = ctan(y).
The real part of y is chosen in the interval [-pi/2,pi/2].
One has:
catan(z) = 1 / 2i clog((1 + iz) / (1 - iz))
VERSIONS
These functions first appeared in glibc in version 2.1.
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/.
