am

finance_math

Function am 

Source 
pub fn am(
    principal: f64,
    rate: f64,
    period: f64,
    year_or_month: bool,
    pay_at_beginning: bool,
) -> f64
Expand description

In business, amortization refers to spreading payments over multiple periods. The term is used for two separate processes: amortization of loans and assets. It also refers to allocating the cost of an intangible asset over a period of time. see definition: https://en.wikipedia.org/wiki/Amortization_%28business%29