Method on @infsup: tanh (X)

Compute the hyperbolic tangent.

Accuracy: The result is a tight enclosure.

tanh (infsup (1))
  ⇒ ans ⊂ [0.76159, 0.7616]

See also: @infsup/atanh, @infsup/coth, @infsup/sinh, @infsup/cosh.

Package: interval