Nothing
library(coop)
set.seed(1234)
m <- 30
n <- 5
x <- matrix(rnorm(m*n), m, n)
t1 <- cov(x)
t2 <- covar(x, inplace=TRUE)
stopifnot(all.equal(t1, t2))
t1 <- cor(x)
t2 <- pcor(x, inplace=TRUE)
stopifnot(all.equal(t1, t2))
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