Convert between compound-interest quantities

Provides consistent conversions between effective interest rate, effective discount rate, force of interest, and optional nominal interest rate convertible m-thly.

Usage

interest_convert(i = NULL, d = NULL, delta = NULL, m = NULL)

Arguments

i

Effective interest rate. May be scalar or vector.

d

Effective discount rate. May be scalar or vector.

delta

Force of interest. May be scalar or vector.

m

Optional positive integer compounding frequency for the nominal rate convertible m-thly.

Value

A list with elements `i`, `d`, `delta`, and, if `m` is supplied, `im` and `m`.

Details

Exactly one of `i`, `d`, or `delta` must be provided.

Examples

interest_convert(i = 0.05)
#> $i
#> [1] 0.05
#> 
#> $d
#> [1] 0.04761905
#> 
#> $delta
#> [1] 0.04879016
#> 
interest_convert(i = c(0.03, 0.05, 0.07))
#> $i
#> [1] 0.03 0.05 0.07
#> 
#> $d
#> [1] 0.02912621 0.04761905 0.06542056
#> 
#> $delta
#> [1] 0.02955880 0.04879016 0.06765865
#> 
interest_convert(d = 0.04761905)
#> $i
#> [1] 0.05
#> 
#> $d
#> [1] 0.04761905
#> 
#> $delta
#> [1] 0.04879017
#> 
interest_convert(delta = log(1.05))
#> $i
#> [1] 0.05
#> 
#> $d
#> [1] 0.04761905
#> 
#> $delta
#> [1] 0.04879016
#>