asinh - Man Page

Math library (libm, -lm)

#include <math.h>

double asinh(double x);
float asinhf(float x);
long double asinhl(long double x);

asinh():

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
        || _XOPEN_SOURCE >= 500
        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

asinhf(), asinhl():

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

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

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.

For an explanation of the terms used in this section, see attributes(7).

C11, POSIX.1-2008.

C99, POSIX.1-2001.

The variant returning double also conforms to SVr4, 4.3BSD.

acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)

acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3).

The man pages asinhf(3) and asinhl(3) are aliases of asinh(3).