Nothing

```
library(supc)
supc:::.set_num_threads(2)
set.seed(1)
x <- matrix(0, 20, 20)
x[] <- rnorm(length(x))
system.time(d1 <- supc:::.test.dist(x))
system.time(d2 <- stats::dist(x))
max(abs(d1 - d2)) < sqrt(.Machine$double.eps)
x <- matrix(0, 200, 2000)
x[] <- rnorm(length(x))
system.time(d1 <- supc:::.test.dist(x))
system.time(d2 <- stats::dist(x))
max(abs(d1 - d2)) < sqrt(.Machine$double.eps)
```

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