add license to new files

Author: Transurgeon

include/atoms/bivariate_full_dom.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef BIVARIATE_FULL_DOM_H
 #define BIVARIATE_FULL_DOM_H
 
@@ -8,4 +25,4 @@ expr *new_elementwise_mult(expr *left, expr *right);
 /* Matrix multiplication: Z = X @ Y */
 expr *new_matmul(expr *x, expr *y);
 
-#endif /* BIVARIATE_FULL_DOM_H */
+#endif /* BIVARIATE_FULL_DOM_H */

include/atoms/bivariate_restricted_dom.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef BIVARIATE_RESTRICTED_DOM_H
 #define BIVARIATE_RESTRICTED_DOM_H
 
@@ -8,4 +25,4 @@ expr *new_rel_entr_vector_args(expr *left, expr *right);
 expr *new_rel_entr_first_arg_scalar(expr *left, expr *right);
 expr *new_rel_entr_second_arg_scalar(expr *left, expr *right);
 
-#endif /* BIVARIATE_RESTRICTED_DOM_H */
+#endif /* BIVARIATE_RESTRICTED_DOM_H */

include/atoms/elementwise_full_dom.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef ELEMENTWISE_FULL_DOM_H
 #define ELEMENTWISE_FULL_DOM_H
 
@@ -31,4 +48,4 @@ expr *new_elementwise(expr *child);
    convention, so we can have a common implementation */
 bool is_affine_elementwise(const expr *node);
 
-#endif /* ELEMENTWISE_FULL_DOM_H */
+#endif /* ELEMENTWISE_FULL_DOM_H */

include/atoms/elementwise_restricted_dom.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef ELEMENTWISE_RESTRICTED_DOM_H
 #define ELEMENTWISE_RESTRICTED_DOM_H
 
@@ -15,4 +32,4 @@ expr *new_entr(expr *child);
 expr *new_atanh(expr *child);
 expr *new_tan(expr *child);
 
-#endif /* ELEMENTWISE_RESTRICTED_DOM_H */
+#endif /* ELEMENTWISE_RESTRICTED_DOM_H */

include/old-code/old_CSR.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef OLD_CSR_H
 #define OLD_CSR_H
 
@@ -26,4 +43,4 @@ void diag_csr_mult(const double *d, const CSR_Matrix *A, CSR_Matrix *C);
 /* y = Ax, where y is returned as dense (no column offset) */
 void Ax_csr_wo_offset(const CSR_Matrix *A, const double *x, double *y);
 
-#endif /* OLD_CSR_H */
+#endif /* OLD_CSR_H */

include/old-code/old_CSR_sum.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef OLD_CSR_SUM_H
 #define OLD_CSR_SUM_H
 
@@ -41,4 +58,4 @@ void sum_all_rows_csr_fill_values(const CSR_Matrix *A, CSR_Matrix *C,
 void sum_block_of_rows_csr_fill_values(const CSR_Matrix *A, CSR_Matrix *C,
                                        const int *idx_map);
 
-#endif /* OLD_CSR_SUM_H */
+#endif /* OLD_CSR_SUM_H */

include/old-code/old_affine.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef OLD_AFFINE_H
 #define OLD_AFFINE_H
 
@@ -6,4 +23,4 @@
 
 expr *new_linear(expr *u, const CSR_Matrix *A, const double *b);
 
-#endif /* OLD_AFFINE_H */
+#endif /* OLD_AFFINE_H */

include/utils/COO_Matrix.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef COO_MATRIX_H
 #define COO_MATRIX_H
 
@@ -40,4 +57,4 @@ void refresh_lower_triangular_coo(COO_Matrix *coo, const double *vals);
 
 void free_coo_matrix(COO_Matrix *matrix);
 
-#endif /* COO_MATRIX_H */
+#endif /* COO_MATRIX_H */

include/utils/CSC_Matrix.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef CSC_MATRIX_H
 #define CSC_MATRIX_H
 
@@ -60,4 +77,4 @@ void csr_to_csc_fill_values(const CSR_Matrix *A, CSC_Matrix *C, int *iwork);
 CSR_Matrix *csc_to_csr_alloc(const CSC_Matrix *A, int *iwork);
 void csc_to_csr_fill_values(const CSC_Matrix *A, CSR_Matrix *C, int *iwork);
 
-#endif /* CSC_MATRIX_H */
+#endif /* CSC_MATRIX_H */

include/utils/CSR_Matrix.h

@@ -1,3 +1,20 @@
+/*
+ * Copyright 2026 Daniel Cederberg and William Zhang
+ *
+ * This file is part of the SparseDiffEngine project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #ifndef CSR_MATRIX_H
 #define CSR_MATRIX_H
 #include <stdbool.h>
@@ -53,4 +70,4 @@ double csr_get_value(const CSR_Matrix *A, int row, int col);
    only upper triangle. C must be pre-allocated with sufficient nnz */
 void symmetrize_csr(const int *Ap, const int *Ai, int m, CSR_Matrix *C);
 
-#endif /* CSR_MATRIX_H */
+#endif /* CSR_MATRIX_H */