Linux repositories inspector

# asinh(3)

GNU
2017-09-15
Aliases: asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhf(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3), asinhl(3)

### manpages-dev

Manual pages about using GNU/Linux for development

### man-pages

Linux kernel and C library user-space interface documentation

## NAME

asinh, asinhf, asinhl - inverse hyperbolic sine function

## SYNOPSIS

```#include <math.h>

double asinh(double x);
float asinhf(float x);
long double asinhl(long double x);
```
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
asinh():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| _XOPEN_SOURCE >= 500
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
asinhf(), asinhl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

## DESCRIPTION

These functions calculate the inverse hyperbolic sine of x; that is the value whose hyperbolic sine is x.

## RETURN VALUE

On success, these functions return the inverse hyperbolic sine of x.
If x is a NaN, a NaN is returned.
If x is +0 (-0), +0 (-0) is returned.
If x is positive infinity (negative infinity), positive infinity (negative infinity) is returned.

No errors occur.

## ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
 Interface Attribute Value Thread safety MT-Safe

## CONFORMING TO

C99, POSIX.1-2001, POSIX.1-2008.
The variant returning double also conforms to SVr4, 4.3BSD.