Function tanh

src/compute-engine/interval/trigonometric.ts:374–379

(x: Interval | IntervalResult)

}

/**
 * Hyperbolic tangent.
 *
 * Domain: all reals, Range: (-1, 1), monotonically increasing.
 */
export function tanh(x: Interval | IntervalResult): IntervalResult {
  const unwrapped = unwrapOrPropagate(x);
  if (!Array.isArray(unwrapped)) return unwrapped;
  const [xVal] = unwrapped;