Function cosh 

pub fn cosh<T: CordicNumber>(x: T) -> T

Hyperbolic cosine. Always ≥ 1.

Saturation Behavior

cosh(x) grows exponentially: cosh(x) ≈ e^|x|/2 for large |x|. This function saturates for extreme inputs:

Condition	Result	Example (I16F16)
|x| > acosh(T::MAX)	T::MAX	|x| > ~11.1 → 32767.99

Unlike sinh, cosh is always positive, so it only saturates to T::MAX.

The exact thresholds:

• I16F16: Saturates for |x| > ~11.1
• I32F32: Saturates for |x| > ~22.2