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, fdlibm's on each (StrictMath on the interpreter and the JVM, the same algorithm on WASM), so the digits agree everywhere. (sinh 0) is exactly 0.0 and (cosh 0) exactly 1.0 everywhere.