Add graph references

2026-06-28 13:49:01 +01:00
parent 0a9807e448
commit a11edf0c53
2578 changed files with 868045 additions and 0 deletions
@@ -0,0 +1,95 @@
+/*
+   igraph library.
+   Copyright (C) 2009-2025  The igraph development team <igraph@igraph.org>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef IGRAPH_MATRIX_H
+#define IGRAPH_MATRIX_H
+
+#include "igraph_decls.h"
+#include "igraph_error.h"
+#include "igraph_vector.h"
+
+IGRAPH_BEGIN_C_DECLS
+
+/* -------------------------------------------------- */
+/* Matrix, very similar to vector                     */
+/* -------------------------------------------------- */
+
+#define BASE_IGRAPH_REAL
+#include "igraph_pmt.h"
+#include "igraph_matrix_pmt.h"
+#include "igraph_pmt_off.h"
+#undef BASE_IGRAPH_REAL
+
+#define BASE_INT
+#include "igraph_pmt.h"
+#include "igraph_matrix_pmt.h"
+#include "igraph_pmt_off.h"
+#undef BASE_INT
+
+#define BASE_CHAR
+#include "igraph_pmt.h"
+#include "igraph_matrix_pmt.h"
+#include "igraph_pmt_off.h"
+#undef BASE_CHAR
+
+#define BASE_BOOL
+#include "igraph_pmt.h"
+#include "igraph_matrix_pmt.h"
+#include "igraph_pmt_off.h"
+#undef BASE_BOOL
+
+#define BASE_COMPLEX
+#include "igraph_pmt.h"
+#include "igraph_matrix_pmt.h"
+#include "igraph_pmt_off.h"
+#undef BASE_COMPLEX
+
+#define IGRAPH_MATRIX_NULL { IGRAPH_VECTOR_NULL, 0, 0 }
+#define IGRAPH_MATRIX_INIT_FINALLY(m, nr, nc) \
+    do { IGRAPH_CHECK(igraph_matrix_init(m, nr, nc)); \
+        IGRAPH_FINALLY(igraph_matrix_destroy, m); } while (0)
+#define IGRAPH_MATRIX_INT_INIT_FINALLY(m, nr, nc) \
+    do { IGRAPH_CHECK(igraph_matrix_int_init(m, nr, nc)); \
+        IGRAPH_FINALLY(igraph_matrix_int_destroy, m); } while (0)
+
+/**
+ * \ingroup matrix
+ * \define MATRIX
+ * \brief Accessing an element of a matrix.
+ *
+ * Note that there are no range checks right now.
+ * This functionality might be redefined as a proper function later.
+ * \param m The matrix object.
+ * \param i The index of the row, starting with zero.
+ * \param j The index of the column, starting with zero.
+ *
+ * Time complexity: O(1).
+ */
+#define MATRIX(m,i,j) ((m).data.stor_begin[(m).nrow*(j)+(i)])
+
+
+IGRAPH_EXPORT IGRAPH_FUNCATTR_PURE igraph_bool_t igraph_matrix_all_almost_e(const igraph_matrix_t *lhs,
+                                                                            const igraph_matrix_t *rhs,
+                                                                            igraph_real_t eps);
+
+IGRAPH_EXPORT igraph_error_t igraph_matrix_zapsmall(igraph_matrix_t *m, igraph_real_t tol);
+IGRAPH_EXPORT igraph_error_t igraph_matrix_complex_zapsmall(igraph_matrix_complex_t *m, igraph_real_t tol);
+
+IGRAPH_END_C_DECLS
+
+#endif