#  File src/library/base/R/gl.R
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## gl function of GLIM

gl <- function (n, k, length = n*k, labels=seq_len(n), ordered=FALSE)
  {
    ## We avoid calling factor(), for efficiency.

    ## Must set levels before class.
    ## That way, `levels<-` will pick up an invalid
    ## labels specification.

    f <- rep_len(rep.int(seq_len(n), rep.int(k,n)), length)
    levels(f) <- as.character(labels)
    class(f) <- c(if (ordered) "ordered", "factor")
    f
  }