NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO
#include <math.h>double atanh(double x);
The atanh function computes the inverse hyperbolic tangent of the real argument x. For a discussion of errors due to rounding off, see math(3M).
The atanh function returns the inverse hyperbolic tangent of x, if successful. If the argument has an absolute value greater than or equal to 1, atanh sets errno to EDOM and a system-dependent notification is performed.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
---|---|
Interface Stability | Evolving |
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO