1for (int c0 = 1; c0 <= M; c0 += 1) {
2 S1(c0, 1);
3 for (int c1 = 2; c1 <= c0; c1 += 1) {
4 S1(c0, c1);
5 S2(c0, c1);
6 }
7 for (int c1 = c0 + 1; c1 <= M; c1 += 1)
8 S1(c0, c1);
9}
10

source code of polly/lib/External/isl/test_inputs/codegen/cloog/square+triangle-1-1-2-3.c