Array Reduction Intrinsics

• PRODUCT(SOURCE[,DIM][,MASK]) -- product of array elements (in an optionally specified dimension under an optional mask);
• SUM(SOURCE[,DIM][,MASK]) -- sum of array elements (in an optionally specified dimension under an optional mask).

The following 1D example demonstrates how the 11 values are reduced to just one by the SUM reduction:

Consider this 2D example, if

• PRODUCT(A) is 720
• PRODUCT(A,DIM=1) is (/2, 12, 30/)
• PRODUCT(A,DIM=2) is (/15, 48/)