bringing a few documents to root

MeshGenerator/Partitioner/Partition.c

@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <metis.h>
+
+
+__declspec(dllexport) int Partition(int ne, int nn, idx_t *eind, int nparts, idx_t *epart)
+{
+    idx_t nee = ne;
+    idx_t nnn = nn;
+    idx_t nnparts = nparts;
+    // create eptr array of idx_t with the number of elements + 1
+    idx_t *eptr = (idx_t *)malloc((ne + 1) * sizeof(idx_t));
+    eptr[0] = 0;
+    int j = 0;
+    for (int i = 1; i < ne + 1; i++)
+    {
+        j += 8;
+        eptr[i] = j;
+    }
+
+
+    // Create array of idx_t with the number of elements + 1
+    idx_t *vwgt = NULL;
+    idx_t *vsize = NULL;
+
+    // // define the number of common nodes
+    idx_t ncommon = 1;
+
+
+
+
+    // This is an array of size nparts that specifies the desired weight for each partition. The target partition
+    // weight for the ith partition is specified at tpwgts[i] (the numbering for the partitions starts from
+    // 0). The sum of the tpwgts[] entries must be 1.0.
+    real_t *tpwgts = NULL;
+    idx_t objval;
+
+    // idx_t options[METIS_NOPTIONS]
+    idx_t *options = (idx_t *)malloc(METIS_NOPTIONS * sizeof(idx_t));
+    METIS_SetDefaultOptions(options);
+
+    // define the partition vector
+
+    // print somthing
+    idx_t *npart = (idx_t *)malloc(nn * sizeof(idx_t));
+    int res= METIS_PartMeshDual(&nee, &nnn, eptr, eind, vwgt, NULL, &ncommon, &nnparts, tpwgts, options, &objval, epart, npart);
+    return res;
+}
+
+
+