Bond-Pricing; Black Scholes

Computes IRR (Internal Rate of Return) for cash flows with different cash flow and compounding conventions. Cash flows need not be evenly spaced.

irr(
  cf,
  interval = NULL,
  cf.freq = 1,
  comp.freq = 1,
  cf.t = seq(from = 0, by = 1/cf.freq, along.with = cf),
  r.guess = NULL,
  toler = 1e-06,
  convergence = 1e-08,
  max.iter = 100,
  method = c("default", "newton", "bisection")
)

`cf`	Vector of cash flows
`interval`	the interval c(lower, upper) within which to search for the IRR
`cf.freq`	Frequency of annuity payments: 1 for annual, 2 for semi-annual, 12 for monthly.
`comp.freq`	Frequency of compounding of interest rates: 1 for annual, 2 for semi-annual, 12 for monthly, Inf for continuous compounding.
`cf.t`	Optional vector of timing (in years) of cash flows. If omitted regular sequence of years is assumed.
`r.guess`	the starting value (guess) from which the solver starts searching for the IRR
`toler`	the argument `toler` for `irr.solve`. The IRR is regarded as correct if abs(NPV) is less than `toler`. Otherwise the `irr` function returns `NA`
`convergence`	the argument `convergence` for `irr.solve`
`max.iter`	the argument `max.iter` for `irr.solve`
`method`	The root finding method to be used. The `default` is to try Newton-Raphson method (`newton.raphson.root`) and if that fails to try bisection (`bisection.root`). The other two choices (`newton` and `bisection` force only one of the methods to be tried.