12.10.38 Hyperbolic tangent

Unsafe Operation: $tanh-fixnum fx

Compute the hyperbolic tangent of fx; return a flonum.

Unsafe Operation: $tanh-bignum bn

Compute the hyperbolic tangent of bn; return a flonum.

Unsafe Operation: $tanh-ratnum rt

Compute the hyperbolic tangent of rt; return a flonum.

Unsafe Operation: $tanh-flonum fl

Compute the hyperbolic tangent of fl; return a flonum. This is an alias for $fltanh.

Unsafe Operation: $tanh-compnum cn

Compute the hyperbolic tangent of cn; return a number object.

Unsafe Operation: $tanh-cflonum cfl

Compute the hyperbolic tangent of cfl; return a cflonum.