| 164 | 164 | def _blockmul(self, other): |
| 165 | 165 | if (isinstance(other, BlockMatrix) and |
| 166 | 166 | self.colblocksizes == other.rowblocksizes): |
| 167 | return BlockMatrix(self.blocks*other.blocks) | |
| 167 | # Perform block multiplication manually to preserve ZeroMatrix objects | |
| 168 | from sympy import Add, S | |
| 169 | ||
| 170 | self_blocks = self.blocks | |
| 171 | other_blocks = other.blocks | |
| 172 | ||
| 173 | # Get dimensions | |
| 174 | m, n = self.blockshape | |
| 175 | n2, p = other.blockshape | |
| 176 | ||
| 177 | # Create result matrix | |
| 178 | result_blocks = [[None for _ in range(p)] for _ in range(m)] | |
| 179 | ||
| 180 | for i in range(m): | |
| 181 | for j in range(p): | |
| 182 | # Compute dot product of row i of self and column j of other | |
| 183 | terms = [] | |
| 184 | for k in range(n): | |
| 185 | term = self_blocks[i, k] * other_blocks[k, j] | |
| 186 | # Debug: print the type of each term | |
| 187 | # print(f"term[{i},{k}]*[{k},{j}] = {term} (type: {type(term)})") | |
| 188 | terms.append(term) | |
| 189 | ||
| 190 | # Handle the sum properly to preserve matrix types | |
| 191 | # Handle the sum properly to preserve matrix types | |
| 192 | # Filter out zero terms but preserve ZeroMatrix objects | |
| 193 | non_zero_terms = [] | |
| 194 | for term in terms: | |
| 195 | # Keep ZeroMatrix objects as they are matrix expressions | |
| 196 | if hasattr(term, 'is_ZeroMatrix') and term.is_ZeroMatrix: | |
| 197 | non_zero_terms.append(term) | |
| 198 | elif not term.is_zero: | |
| 199 | non_zero_terms.append(term) | |
| 200 | ||
| 201 | if len(non_zero_terms) == 0: | |
| 202 | # All terms were zero, create appropriate ZeroMatrix | |
| 203 | # Get the shape from the blocks we're multiplying | |
| 204 | # self_blocks[i, k] * other_blocks[k, j] where k=0 | |
| 205 | rows = self_blocks[i, 0].rows | |
| 206 | cols = other_blocks[0, j].cols | |
| 207 | sum_expr = ZeroMatrix(rows, cols) | |
| 208 | elif len(non_zero_terms) == 1: | |
| 209 | sum_expr = non_zero_terms[0] | |
| 210 | else: | |
| 211 | sum_expr = Add(*non_zero_terms) | |
| 212 | ||
| 213 | result_blocks[i][j] = sum_expr | |
| 214 | ||
| 215 | return BlockMatrix(result_blocks) | |
| 168 | 216 | |
| 169 | 217 | return self * other |
| 170 | 218 |
| Test Name | Status |
|---|---|
test_issue_17624 | Fail |
test_zero_matrix_add | Fail |
test_bc_matmul | Pass |
test_bc_matadd | Pass |
test_bc_transpose | Pass |
test_bc_dist_diag | Pass |
test_block_plus_ident | Pass |
test_BlockMatrix | Pass |
test_block_collapse_explicit_matrices | Pass |
test_BlockMatrix_trace | Pass |
test_BlockMatrix_Determinant | Pass |
test_squareBlockMatrix | Pass |
test_BlockDiagMatrix | Pass |
test_blockcut | Pass |
test_reblock_2x2 | Pass |
test_deblock | Pass |
test_sort_key | Pass |
test_matadd_sympify | Pass |
test_matadd_of_matrices | Pass |
test_doit_args | Pass |
test_generic_identity | Pass |
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