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CASINH(3)                  Linux Programmer's Manual                 CASINH(3)
NAME
       casinh, casinhf, casinhl - complex arc sine hyperbolic
SYNOPSIS
       #include <complex.h>
       double complex casinh(double complex z);
       float complex casinhf(float complex z);
       long double complex casinhl(long double complex z);
       Link with -lm.
DESCRIPTION
       These  functions  calculate  the  complex arc hyperbolic sine of z.  If
       y = casinh(z), then z = csinh(y).  The imaginary part of y is chosen in
       the interval [-pi/2,pi/2].
       One has:
           casinh(z) = clog(z + csqrt(z * z + 1))
VERSIONS
       These functions first appeared in glibc in version 2.1.
ATTRIBUTES
       For   an   explanation   of   the  terms  used  in  this  section,  see
       attributes(7).
       +-------------------------------+---------------+---------+
       |Interface                      | Attribute     | Value   |
       +-------------------------------+---------------+---------+
       |casinh(), casinhf(), casinhl() | Thread safety | MT-Safe |
       +-------------------------------+---------------+---------+
CONFORMING TO
       C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO
       asinh(3), cabs(3), cimag(3), csinh(3), complex(7)
COLOPHON
       This page is part of release 4.15 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.
                                  2015-04-19                         CASINH(3)