# Define a convenience function that is easy to call from C code
grid.top.level.vp <- function() {
  pushedvp(viewport(clip=TRUE, name="ROOT"))
}

# An accessor for getting at the grid global state structure
# to make debugging easier for me;  all I have to type is grid:::STATE()
STATE <- function() {
  get(".GRID.STATE", envir=.GridEvalEnv)
}

is.even <- function(x) x %% 2 == 0

is.odd <- function(x) !is.even(x)


grid.pretty <- function(range) {
  if (!is.numeric(range))
    stop("'range' must be numeric")
  .Call(L_pretty, range)
}