G'day all,
I have daily scripts running to install the patched version of the
current R version and the development version of R on my linux box
(Ubuntu 18.04.4 LTS).
The last development version that was successfully compiled and
installed was "R Under development (unstable) (2020-01-25 r77715)" on
27 January. Since then the script always fails as a regression test
seems to fail. Specifically, in the tests/ subdirectory of my build
directory I have a file reg-tests-1d.Rout.fail which ends with:
> ## more than half of the above were rounded *down* in R <= 3.6.x
> ## Some "wrong" test cases from CRAN packages (partly relying on wrong R <=
> 3.6.x behavior)
> stopifnot(exprs = {
+ all.equal(round(10.7775, digits=3), 10.778, tolerance = 1e-12) # even
tol=0, was 10.777
+ all.equal(round(12345 / 1000, 2), 12.35 , tolerance = 1e-12) # even
tol=0, was 12.34 in Rd
+ all.equal(round(9.18665, 4), 9.1866, tolerance = 1e-12) # even
tol=0, was 9.1867
+ })
Error: round(10.7775, digits = 3) and 10.778 are not equal:
Mean relative difference: 9.27902e-05
Execution halted
This happens while the 32bit architecture is installed, which is a bit
surprising as I get the following results for the last installed
version of R's development version:
R Under development (unstable) (2020-01-25 r77715) -- "Unsuffered Consequences"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu/32 (32-bit)
[...]
> round(10.7775, digits=3)
[1] 10.778
and
R Under development (unstable) (2020-01-25 r77715) -- "Unsuffered Consequences"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu/64 (64-bit)
[...]
> round(10.7775, digits=3)
[1] 10.778
On the other hand, the R 3.6.2 version, that I mainly use at the moment,
gives the following results:
R version 3.6.2 (2019-12-12) -- "Dark and Stormy Night"
Copyright (C) 2019 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu/32 (32-bit)
[...]
> round(10.7775, digits=3)
[1] 10.777
and
R version 3.6.2 (2019-12-12) -- "Dark and Stormy Night"
Copyright (C) 2019 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu/64 (64-bit)
[...]
> round(10.7775, digits=3)
[1] 10.777
So it seems as if the behaviour of round() has changed between R 3.6.2
and the development version. But I do not understand why this test all
of a sudden failed if the results from the last successfully installed
development version of R suggest that the test should be passed.
Thanks in advance for any insight and tips.
Cheers,
Berwin
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