sinh cosh tanh

(sinh number) (cosh number) (tanh number)

The hyperbolic functions, each returning a float. sinh is the hyperbolic sine, cosh the hyperbolic cosine, and tanh the hyperbolic tangent. All three work on every backend: the interpreter and JVM use Math.sinh/Math.cosh/Math.tanh, while the WASM backend derives all three from its software exp approximation, so its results may differ slightly in the least significant digits (~1e-7 relative for |x| up to ~20, degrading for larger arguments like the software exp itself; sinh switches to a Taylor series below |x| = 0.25, so tiny arguments stay accurate). (sinh 0) is exactly 0.0 and (cosh 0) exactly 1.0 everywhere.