Method on @infsup: csch (X) ¶

Compute the hyperbolic cosecant, that is the reciprocal hyperbolic sine.

Accuracy: The result is a tight enclosure.

csch (infsup (1))
  ⇒ ans ⊂ [0.85091, 0.85092]

See also: @@infsup/sinh, @@infsup/sech, @@infsup/coth.

Package: interval