•Flood regions recognize that reducing into a specific column over
specifies the situation
•Need a generic column -- or a column that does not have a
specific position … use ‘*’ as value
•
•region FlCol = [1..m,
*]; -- Flood regions
• FlRow = [*, 1..n];
•var MaxCol : [FlCol] double; -- An m length
col
• Row : [FlRow] double; -- An n length row
•[1..m,*] MaxCol :=
max<< [1..m,1..n] A; -- Better
•