# asinh(3) [netbsd man page]

```ASINH(3)						   BSD Library Functions Manual 						  ASINH(3)

NAME
asinh, asinhf -- inverse hyperbolic sine function

LIBRARY
Math Library (libm, -lm)

SYNOPSIS
#include <math.h>

double
asinh(double x);

float
asinhf(float x);

DESCRIPTION
The asinh() and asinhf() functions compute the inverse hyperbolic sine of the real argument

RETURN VALUES
The asinh() and asinhf() functions return the inverse hyperbolic sine of x.

acosh(3), atanh(3), exp(3), math(3)

HISTORY
The asinh() function appeared in 4.3BSD.

BSD								    May 6, 1991 							       BSD```

## Check Out this Related Man Page

```asinh(3M)						  Mathematical Library Functions						 asinh(3M)

NAME
asinh, asinhf, asinhl - inverse hyperbolic sine functions

SYNOPSIS
cc [ flag... ] file... -lm [ library... ]
#include <math.h>

double asinh(double x);

float asinhf(float x);

long double asinhl(long double x);

DESCRIPTION
These functions compute the inverse hyperbolic sine of their argument x.

RETURN VALUES
Upon successful completion, these functions return the inverse hyperbolic sine of their argument.

If x is NaN, NaN is returned.

If x is +-0 or +-Inf, x is returned.

ERRORS
No errors are defined.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+