You are tasked with optimizing a piece of code containing nested loops...
- Move calculations outside of the loops.
- Replace inner loop with a lookup table.
- Inline the inner loop calculations.
- Prefetch data before processing in the inner loop.
A lookup table can be used to store pre-computed results of complex calculations. By replacing the inner loop's calculations with lookups from this table, one can often achieve significant speedups, especially if the same calculations are being performed repeatedly.
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