R devel - Jan 2025 - binomial()$linkinv no longer accepts integer values

On Wed, 8 Jan 2025 10:57:47 -0500
Ben Bolker <bbolker at gmail.com> wrote:
> I haven't done the archaeology to figure out when this broke/exactly 
> what change in the R code base broke it: it happened within the last 
> month or so
binomial() itself exhibits this property even in R-4.2.2 from more than
two years ago:

R -q -s -e 'getRversion(); binomial()$linkinv(1L)'
# [1] ?4.2.2?
# Error in binomial()$linkinv(1L) : 
#   REAL() can only be applied to a 'numeric', not a 'integer'

It's the `etas` [1] that suddenly became integer due to a change in
seq.int():

R -q -s -e 'str(seq.int(-8, 8, by=1))'
# num [1:17] -8 -7 -6 -5 -4 -3 -2 -1 0 1 ...
R-devel -q -s -e 'str(seq.int(-8, 8, by=1))'
# int [1:17] -8 -7 -6 -5 -4 -3 -2 -1 0 1 ...

-- 
Best regards,
Ivan

[1]
https://github.com/lme4/lme4/blob/54c54a320c23b34fea2f7e613928d1ebe7a3fd37/tests/testthat/test-glmFamily.R#L10C5-L10C25

Thanks, that makes sense.

   I guess if it never worked for integers (or hasn't worked in a long 
time, at least) then it doesn't need to be fixed/changed ...

   cheers
    Ben


On 2025-01-08 11:20 a.m., Ivan Krylov wrote:
> On Wed, 8 Jan 2025 10:57:47 -0500
> Ben Bolker <bbolker at gmail.com> wrote:
> 
>> I haven't done the archaeology to figure out when this
broke/exactly
>> what change in the R code base broke it: it happened within the last
>> month or so
> 
> binomial() itself exhibits this property even in R-4.2.2 from more than
> two years ago:
> 
> R -q -s -e 'getRversion(); binomial()$linkinv(1L)'
> # [1] ?4.2.2?
> # Error in binomial()$linkinv(1L) :
> #   REAL() can only be applied to a 'numeric', not a
'integer'
> 
> It's the `etas` [1] that suddenly became integer due to a change in
> seq.int():
> 
> R -q -s -e 'str(seq.int(-8, 8, by=1))'
> # num [1:17] -8 -7 -6 -5 -4 -3 -2 -1 0 1 ...
> R-devel -q -s -e 'str(seq.int(-8, 8, by=1))'
> # int [1:17] -8 -7 -6 -5 -4 -3 -2 -1 0 1 ...
> 
-- 
Dr. Benjamin Bolker
Professor, Mathematics & Statistics and Biology, McMaster University
 > E-mail is sent at my convenience; I don't expect replies outside of 
working hours.