tmp: add debug print...

Author: oscarbenjamin

src/flint/test/test_all.py

@@ -4209,39 +4209,57 @@ def is_permutation(P):
 
     def check_fflu(A):
         m, n = shape(A)
+        print('a')
         P, L, D, U = A.fflu()
+        print('b')
         Dq = QQ(D)
         assert P*A == L*Dq.inv()*U
         assert shape(P) == shape(L) == shape(D) == (m, m)
         assert shape(A) == shape(U) == (m, n)
         assert is_permutation(P)
+        print('c')
         assert L.is_lower_triangular()
+        print('d')
         assert U.is_upper_triangular()
+        print('e')
         assert D.is_diagonal()
+        print('f')
 
     for M, S, is_field in _all_matrices():
         # XXX: Add this to more matrix types...
         if M is not flint.fmpz_mat:
             continue
 
+        print(0)
         A = M([[1, 2], [3, 4]])
         P, L, D, U = A.fflu()
         assert P == M([[1, 0], [0, 1]])
         assert L == M([[1, 0], [3, -2]])
         assert D == M([[1, 0], [0, -2]])
         assert U == M([[1, 2], [0, -2]])
 
+        print(1)
         check_fflu(M(0, 0, []))
+        print(2)
         check_fflu(M(2, 0, []))
+        print(3)
         check_fflu(M(0, 2, []))
+        print(4)
         check_fflu(M([[1]]))
 
+        print(5)
         check_fflu(M([[1, 2], [3, 4]]))
+        print(6)
         check_fflu(M([[1, 2, 3], [4, 5, 6]]))
+        print(7)
         check_fflu(M([[1, 2], [3, 4], [5, 6]]))
+        print(8)
         check_fflu(M([[1, 2], [2, 4]]))
+        print(9)
         check_fflu(M([[0, 0], [0, 0]]))
+        print(10)
         check_fflu(M([[1, 1, 1], [1, 1, 1]]))
+        print(11)
 
         for _ in range(10):
             for m in range(1, 5):