https://github.com/cran/pracma
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Tip revision: e2512490ec9e26c0bfb230f9fd97bcf07cc8c07b authored by Hans W. Borchers on 10 November 2023, 00:10:02 UTC
version 2.4.4
Tip revision: e251249
horner.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)$y, x^2 + 1)
identical(horner(p, x)$dy, 2*x)

p <- c(1, -6, 11, -6)
identical(hornerdefl(p, 3)$y, 0)
identical(hornerdefl(p, 3)$q, (c(1, -3, 2)))
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