20
Regions
•Regions
are named sets of index tuples
•Regions
are declared with syntax
region <name> = [<ll>..<ul> {, <ll>..<ul>}* ]
•For
example
region R = [1..n,
1..n]; -- Std 2-dim region
region V = [0..m-1]; -- 0-origin
•Short
names common; caps by convention
•Specify
stride with by
following the limits,
region Evens = [0..n by 2];
-- 0, 2, 4, ...