Crate rfinancial 

rfinancial

rfinancial is a financial crate mimicking numpy_financial in Python.

Initial Working Version

• fv - future value
• pmt - payment against loan principal plus interest
• nper - number of periodic payments
• ipmt - interest portion of a payment
• ppmt - payment against loan principal
• pv - present value
• rate - rate of interest per period
• irr - internal rate of return
• npv - net present value of a cash flow series
• mirr - modified internal rate of return

To Be Added

• amortization

Tests

• All test cases are tested against numpy_financial’s result with some exceptions
• numpy_financial has some its own issues

Example

You will find example in each module page

use rfinancial::*;
let fv = FutureValue::from_tuple((0.075, 20, -2000.0, 0.0, WhenType::End));
println!("{:#?}'s fv is {:?}", fv, fv.get());

Future Work

• Add more functions
• Add more test cases

Contribution

• Use the crate and feedback
• Submit pull request or issues though the GitHub repository

Structs

FutureValue

Compute the future value

InterestPayment

Compute the interest portion of a payment

InternalRateReturn

Compute the Internal Rate of Return (IRR)

ModifiedIRR

Compute the Modified Internal Rate of Return (MIRR)

NetPresentValue

Compute the net present value of a cash flow, given an interest rate

NumberPeriod

Compute the number of periodic payments

ParaError

Payment

Compute the payment against loan principal plus interest

PresentValue

Compute the present value

PrincipalPayment

Compute the payment against loan principal

Rate

Compute the interest rate

Enums

Error

ParaType

Parameter types in a enum

WhenType

when payments are due in a payment period

Constants

ATOL

Tolerance of absolute difference

RTOL

Tolerance of relative difference

Functions

float_close

To compare if two f64 are close enough to be treated as equal

get_f64

get_u32

get_vecf64

get_when

Type Aliases

ParaMap

Result