casinhf man page on DragonFly

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```CASINH(3P)		   POSIX Programmer's Manual		    CASINH(3P)

NAME
casinh, casinhf - complex arc hyperbolic sine functions

SYNOPSIS
#include <complex.h>

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

DESCRIPTION
These  functions	 compute  the  complex	arc hyperbolic sine of z, with
branch cuts outside the interval [-i, +i] along the imaginary axis.

RETURN VALUE
These functions return the complex arc hyperbolic sine  value,  in  the
range  of  a  strip mathematically unbounded along the real axis and in
the interval [-ipi/2, +ipi/2] along the imaginary axis.

ERRORS
No errors are defined.

The following sections are informative.

EXAMPLES
None.

APPLICATION USAGE
None.

RATIONALE
None.

FUTURE DIRECTIONS
None.

csinh(), the Base Definitions  volume  of  IEEE Std 1003.1-2001,	 <com‐
plex.h>

Portions	 of  this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
--  Portable  Operating	System	Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
Electrical  and	Electronics  Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The  Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be  obtained	online
at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			    CASINH(3P)
```
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