catan, catanf, catanl — complex arc tangents
#include <complex.h>
double complex catan( |
double complex | z) ; |
float
complex catanf( |
float complex | z) ; |
long
double complex catanl( |
long double complex | z) ; |
![]() |
Note |
---|---|
Link with |
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))
This page is part of release 3.09 of the Linux man-pages
project. A
description of the project, and information about reporting
documentation bugs, can be found at
http://www.kernel.org/doc/man-pages/.
Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de) Distributed under GPL |