Returns the inverse hyperbolic tangent of x
.
Remember to link the math library: valac -X -lm ...
If the absolute value of x
is greater than 1.0, GLib.Math.atanhf returns not-a-number (
float.NAN) and GLib.errno is set
EDOM.
x |
A numeric value which is between -1.0 and 1.0. |