End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
class method
Math.tanh
Math.tanh(x) → Float
math.c
View on GitHub ↗
static VALUE
math_tanh(VALUE unused_obj, VALUE x)
{
return DBL2NUM(tanh(Get_Double(x)));
}
Computes the hyperbolic tangent of x (expressed in radians).
Domain: (-INFINITY, INFINITY)
Codomain: (-1, 1)
Example
Math.tanh(0) #=> 0.0