Time Value of Money calculator
Performs financial calculations for:
- n (number of periods)
- pv (present value)
- pmt (payment amount)
- fv (future value)
- i (interest rate)
NOTE: Only supports annuity due.
Usage
Install the gem:
gem install time_value
Initialize with values:
time_value = TimeValue.new(n, i, pv, pmt, fv)
Or set values after initialization:
time_value = TimeValue.new()
time_value.n = my_n
time_value.i = my_i
time_value.pv = my_pv
time_value.pmt = my_pmt
my_fv = time_value.calc_fv()
Remember to follow a convention for signs of values:
- Money being paid should have a negative value (-)
- Money being received should have a positive value (+)
Failing to follow this convention may yield unexpected results