ATANH
NAME SYNOPSIS DESCRIPTION ERRORS CONFORMING TO SEE ALSO
atanh - inverse hyperbolic tangent function
#include x);
The atanh() function calculates the inverse hyperbolic tangent of x; that is the value whose hyperbolic tangent is x. If the absolute value of x is greater than 1.0, acosh() returns not-a-number (NaN) and errno is set.
EDOM
x is out of range.
SVID 3, POSIX, BSD 4.3, ISO 9899
asinh(3), acosh(3), cosh(3), sinh(3), tanh(3)
