ASINH(3) | Library Functions Manual | ASINH(3)

# NAME

`asinh`, `asinhf`, `asinhl` — inverse hyperbolic sine functions

# SYNOPSIS

Math Library (libm, -lm)
`#include <math.h>`

double
`asinh`(double x);

float
`asinhf`(float x);

long double
`asinhl`(long double x);

# DESCRIPTION

The `asinh`() function computes the inverse hyperbolic sine of the real argument. The `asinhf`() function is a single precision version of `asinh`(). The `asinhl`() function is an extended precision version of `asinh`().

# RETURN VALUES

The `asinh`(), `asinhf`() and `asinhl`() functions return the inverse hyperbolic sine of x.

# SEE ALSO

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

# HISTORY

The `asinh`() function appeared in 4.3BSD.

June 7, 2025 | Debian