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> ###
> ### NTHROOT.R  +++ Test suite +++
> ###
> 
> 
> test.nthroot <- function(input, expected) {
+     output <- do.call(getFromNamespace("nthroot", "pracma"), input)
+     identical(output, expected)
+ }
> 
> nthroot.expected.n0 <- c(-1.2)
> nthroot.expected.n1 <- c(1, -2, 3)
> nthroot.expected.n2 <- c(1,  0, 3)
> nthroot.expected.n3 <- c(1, -2, 3)
> 
> test.nthroot(list(x=-1.2^5, n=5), nthroot.expected.n0)
[1] TRUE
> test.nthroot(list(x=c(1,-2, 3), n=1), nthroot.expected.n1)
[1] TRUE
> test.nthroot(list(x=c(1, 0, 9), n=2), nthroot.expected.n2)
[1] TRUE
> test.nthroot(list(x=c(1,-8,27), n=3), nthroot.expected.n3)
[1] TRUE
> 
> proc.time()
   user  system elapsed 
   0.14    0.04    0.17