## Linux and UNIX Man Pages

Test Your Knowledge in Computers #519
Difficulty: Easy
3,201 = 0b110010000001
True or False?

# casinhf(3) [linux man page]

```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);

DESCRIPTION
The  casinh()  function	calculates 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.

CONFORMING TO
C99.

asinh(3), cabs(3), cimag(3), complex(7)

COLOPHON
This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
be found at http://www.kernel.org/doc/man-pages/.

2008-08-11								 CASINH(3)```

## Check Out this Related Man Page

```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);

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.

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

2015-04-19								 CASINH(3)```

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