search for: bigz

Hi With package:gmp, is this an expected behavior? > rep(1:3, rep(3, 3)) [1] 1 1 1 2 2 2 3 3 3 > rep(as.bigz(1:3), rep(3, 3)) Big Integer ('bigz') object of length 9: [1] 1 2 3 1 2 3 1 2 3 This code is used inside `outer`, so more worse > outer(1:3, 1:3, `*`) [,1] [,2] [,3] [1,] 1 2 3 [2,] 2 4 6 [3,] 3 6 9 > outer(as.bigz(1:3), as.bigz(1:3), `*`) Big Intege...

With a matrix such as C I do not have any problem: >library(gmp) > C V1 V2 V3 V4 V5 V6 V7 [1,] 1 0 0 0 1 0 0 [2,] 0 1 0 0 0 1 0 [3,] 0 0 1 0 0 0 1 [4,] 0 0 0 1 0 0 0 [5,] 0 0 0 0 1 0 0 [6,] 0 0 0 0 0 1 0 [7,] 0 0 0 0 0 0 1 > solve.bigz(C) [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,] "1" "0" "0" "0" "-1" "0" "0" [2,] "0" "1" "0" "0" "0" "-1" "0" [3,] "0" "0" &q...

I want to find the inverse of an integer k mod p (prime.) Is there a function that can do this for me? I know i could simply write (k^(p-2)) %% p, but i need to do this for large primes (above 100) and this gives the warning message: Warning message: probable complete loss of accuracy in modulus so this method does not work. Any ideas? Thanks, Samuel --

Hi (If you're wondering, this is a Project Euler question :)) If I wanted to calculate the sum of the digits in the decimal representation of 2^1000, what would be a good way to go about that? I've tried the following methods: # Calculate the sum of digits in the decimal representation of 2^n # Only works for smaller values of n bsum <- function(n) { s <- 0 e <-

...39;s evaluated through \code{eval}), \code{numeric} (including \code{INF} and \code{NaN}), \code{complex} (including \code{INF}), \code{matrix}, \code{array}, \code{list}, \code{pairlist}, \code{table}, \code{data.frame}, \code{lm}, \code{randomForest}, \code{randomForest.formula}, \code{ts}, \code{bigz} and \code{bigq} from package \code{gmp}, \code{int64} and \code{uint64} from package \code{int64}, and \code{integer64} from package \code{bit64}. Other classes are processed with \code{as.character( value )}. Table-like structures defines three commands for each structure: \code{nameColumns,} t...

...dmargins(*, ..) now also works when fn() is a local function, thanks to bug report and patch PR#17124 from Alex Bertram. * rank(x) and hence sort(x) now work when x is an object (as per is.object(x)) of type "raw" _and_ provides a valid `[` method, e.g., for gmp::as.bigz(.) numbers. * chisq.test(*, simulate.p.value=TRUE) and r2dtable() now work correctly for large table entries (in the millions). Reported by Sebastian Meyer and investigated by more helpers in PR#16184. * Low-level socket read/write operations have been fixed to correctl...

...dmargins(*, ..) now also works when fn() is a local function, thanks to bug report and patch PR#17124 from Alex Bertram. * rank(x) and hence sort(x) now work when x is an object (as per is.object(x)) of type "raw" _and_ provides a valid `[` method, e.g., for gmp::as.bigz(.) numbers. * chisq.test(*, simulate.p.value=TRUE) and r2dtable() now work correctly for large table entries (in the millions). Reported by Sebastian Meyer and investigated by more helpers in PR#16184. * Low-level socket read/write operations have been fixed to correctl...

...dmargins(*, ..) now also works when fn() is a local function, thanks to bug report and patch PR#17124 from Alex Bertram. * rank(x) and hence sort(x) now work when x is an object (as per is.object(x)) of type "raw" _and_ provides a valid `[` method, e.g., for gmp::as.bigz(.) numbers. * chisq.test(*, simulate.p.value=TRUE) and r2dtable() now work correctly for large table entries (in the millions). Reported by Sebastian Meyer and investigated by more helpers in PR#16184. * Low-level socket read/write operations have been fixed to correctl...

Hi, I have a data frame with one column containing string of the form "ABC...|XYZ..." where ABC etc are fields of 6 alphanumeric characters each and XYZ etc are fields of 8 alphanumeric characters each; "|" is a mandatory separator; I do not know in advance how many fields of each kind will each row contain. I need to extract these fields from the string. === How do I do that?

...for these. > >> >> > >> >> OTOH, there are quite a few other 'number-like' thingies for > >> >> which I would then like to have range(*, finite=TRUE) work, > >> >> e.g., "mpfr" (package {Rmpfr}) or "bigz" {gmp} numbers, numeric > >> >> sparse matrices, ... > >> >> > >> >> To keep such methods all internally consistent with > >> >> range.default(), I could envision something like this > >> >> >...