bit_rangediff: bit range difference

In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

bit range difference

Description

Fast version of setdiff(rx[1]:rx[2], y).

Usage

bit_rangediff(rx, y, revx = FALSE, revy = FALSE)

Arguments

rx	range of integers given as ri or as a two-element integer
y	an integer vector of elements to exclude
revx	FALSE as is, TRUE to reverse the direction and sign of rx
revy	FALSE as is, TRUE to reverse the direction and sign of y

Details

determines the range of the integers y and checks if the density justifies use of a bit vector; if yes, uses a bit vector for the set operation; if no, falls back to a quicksort and merge_rangediff

Value

an integer vector

See Also

bit_setdiff, merge_rangediff

Examples

bit_rangediff(c(1L,6L), c(3L,4L))
bit_rangediff(c(6L,1L), c(3L,4L))
bit_rangediff(c(6L,1L), c(3L,4L), revx=TRUE)
bit_rangediff(c(6L,1L), c(3L,4L), revx=TRUE, revy=TRUE)

bit documentation built on Sept. 20, 2024, 5:08 p.m.