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).

       allbox; lbw30 lb lb l l l.  Interface Attribute Value T{ casinh(), cas-
       inhf(), casinhl() T}   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 4.16 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)