R Under development (unstable) (2023-11-08 r85496 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2023 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> ##
> ##  h or n e r . R  Test Suite
> ##
> 
> 
> horner <- pracma::horner
> hornerdefl <- pracma::hornerdefl
> 
> p <- c(1, 0, 1)
> x <- c(-2, -1, 0, 1, 2)
> identical(horner(p, x)$y, x^2 + 1)
[1] TRUE
> identical(horner(p, x)$dy, 2*x)
[1] TRUE
> 
> p <- c(1, -6, 11, -6)
> identical(hornerdefl(p, 3)$y, 0)
[1] TRUE
> identical(hornerdefl(p, 3)$q, (c(1, -3, 2)))
[1] TRUE
> 
> proc.time()
   user  system elapsed 
   0.14    0.01    0.15