asinh

Syntax

#include <math.h> double asinh(double x);

Description

This function returns the inverse hyperbolic sine of the argument x.

Return Value

The inverse hyperbolic sine of x. If the argument x is a NaN, the return value is NaN and errno is set to EDOM. If x is a positive or negative Inf, the return value is equal to the value of x, and errno is left unchanged.

Portability

ANSI/ISO C	No
POSIX	No