Interest rate mechanism

mrgnlend’s interest rate mechanism uses a 2-piece piecewise function that is configured per asset. It can be expressed as the following:

$r_{\text{borrow}} = \begin{cases} \frac{x}{o} \cdot pl & \text{if } x \leq o \\ \left(\frac{x-o}{1-o}\right) \cdot (pm - pl) + pl & \text{if } x > o \\ \end{cases}$

$\begin{aligned} &\text{where:} \\ & x: \text{current utilization}\\ & o: \text{optimal utilization}\\ & pl: \text{borrower rate at optimal utilization}\\ & pm: \text{maximum borrower rate} \end{aligned}$