Automated code inspection for performance
A bi-dimensional array memory access follows a column-major pattern when iterating over the columns sequentially, then doing the same for each row within the column.
for (j=0; j<COLS; ++j) {
for (i=0; i<ROWS; ++i) {
A[i][j]= …
}
}Note in the pseudocode that the outer loop drives the second dimension of the array while the inner loop drives the first dimension.
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