froll* not integer64-aware
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
Research direction
Start by running the reproducible examples for frollmean(), frollsum(), and frollapply() with bit64::as.integer64() inputs. Trace these three entry points to see how integer64 values are handled, then verify that rolling results preserve the intended values and type without the shown corruption.
Written by the indexing model from the issue text.
Description
library(bit64)
library(data.table)
frollmean(as.integer64(1:3), 2)
# [1] NA 9.881313e-324 9.881313e-324
frollsum(as.integer64(1:3), 2)
# [1] NA 1.482197e-323 2.470328e-323
structure(.Last.value, class = "integer64")
# integer64
# [1] 9218868437227407266 3 5
frollapply(as.integer64(1:3), 2, \(x) sum(sqrt(x)))
# [1] NA 5.366214e-162 6.993387e-162
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