The catanh() function
calculates the complex arc hyperbolic tangent of z. If y = catanh(z), then z = ctanh(y). The imaginary part
of y is chosen in the interval
[−pi/2,pi/2].
One has:
catanh(z) = 0.5 * clog((1 + z) / (1 − z))
VERSIONS
These functions first appeared in glibc in version
2.1.
CONFORMING TO
C99.
SEE ALSO
atanh(3), cabs(3), cimag(3), complex(7)
COLOPHON
This page is part of release 3.22 of the Linux man-pages project. A
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bugs, can be found at
http://www.kernel.org/doc/man-pages/.
Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)
Distributed under GPL