casinh(3)                  Library Functions Manual                  casinh(3)

NAME
       casinh, casinhf, casinhl - complex arc sine hyperbolic

LIBRARY
       Math library (libm, -lm)

SYNOPSIS
       #include <complex.h>

       double complex casinh(double complex z);
       float complex casinhf(float complex z);
       long double complex casinhl(long double complex z);

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))

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |casinh (), casinhf (), casinhl ()           | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       C11, POSIX.1-2008.

HISTORY
       glibc 2.1.  C99, POSIX.1-2001.

SEE ALSO
       asinh(3), cabs(3), cimag(3), csinh(3), complex(7)

Linux man-pages 6.7               2023-10-31                         casinh(3)