Effect:

On exit, if mode is CYCL, the value of

  dst [$x_0, \ldots, x_{\mbox{\tt dim}}, \ldots, x_{R - 1}$]

is

  src [$x_0, \ldots,x_{\mbox{\tt dim}} + \mbox{\tt shift} \ \bmod N,\ldots, x_{R - 1}$]

where $N$ is the extent of dimension dim. If mode is EDGE, the exit value of the dst element is

  src [$x_0, \ldots,x_{\mbox{\tt dim}} + \mbox{\tt shift},\ldots, x_{R - 1}$]

if $x_{\mbox{\tt dim}} + \mbox{\tt shift}$ is in the range $0, \ldots, N - 1$, or unchanged from the entry value, if not. If mode is NONE executing the schedule has no effect.