Function imbalance 

pub fn imbalance(i: &[FPDecimal], p: &[FPDecimal], w: &[FPDecimal]) -> FPDecimal

Description

Calculates the cluster imbalance.

Params

• i is a reference to an array containing objects of type FPDecimal which
  is the asset inventory.

• p is a reference to an array containing objects of type FPDecimal which
  are the prices of the assets.

• w is a reference to an array containing objects of type FPDecimal which are the target weights of the assets.