Dear R package authors,

I am currently struggling with differences in test results between R versions 3.5.3 and 3.6.0: There are expected ones (from the new behavior of sample(), which can be switched off by RNGkind(sample.kind="Rounding")) and unexpected ones: The normal random numbers from a call "y <- rnorm(36)" have changed between R versions, in spite of working with a seed. Consequently, most other outcomes change as well, as they depend on those random numbers.

Does anyone have an idea what this behavior results from ? You see samples below (ignore the first columns, these can be made alike by changing sample.kind; but the normal random numbers in the last column were the bottom ones before version 3.6.0 and are the top ones afterwards.


< 1 200 10 -25 -2.07823754
< 2 150 30 25 0.48522682
< 3 200 20 -25 0.69676878

...

> 1 250 10 -15 -0.820426525
> 2 200 10 -25 -1.238082813
> 3 100 10 15 -1.199567511
...

Can anyone explain, why this is the case, or how I could possibly circumvent it (for some noLD checks)?

Best regards,

Ulrike

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## Prof. Ulrike Groemping
## FB II
## Beuth University of Applied Sciences Berlin
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