mpi line with matrix exchange

utils/utils.c

@@ -1,9 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-/*
- * Create a matrix stored in a single array.
- */
 double *create_sa_matrix(int rows, int cols) {
   double *x;
 
@@ -11,21 +8,26 @@ double *create_sa_matrix(int rows, int cols) {
   return x;
 }
 
-/*
- * Destroy a single array matrix.
- */
 void destroy_sa_matrix(double *x) {
   free(x);
 }
 
-/*
- * Get the index for the single array matrix
- * that correspond to the given row and column.
- */
 int sa_index(int cols, int r, int c) {
   return r * cols + c;
 }
 
+
+void print_sa_matrix(double *x, int rows, int cols) {
+  int i, j;
+  for (i = 0; i < rows; i++) {
+    for (j = 0; j < cols; j++) {
+      printf("%f\t", x[sa_index(cols, i, j)]);
+    }
+    printf("\n");
+  }
+  fflush(stdout);
+}
+
 double **create_matrix(int rows, int cols) {
   int i;
   double **x;

utils/utils.h

@@ -17,11 +17,27 @@ typedef struct borders {
 } borders;
 
 
+/*
+ * Create a matrix stored in a single array.
+ */
 double *create_sa_matrix(int rows, int cols);
+
+/*
+ * Destroy a single array matrix.
+ */
 void destroy_sa_matrix(double *x);
+
+/*
+ * Get the index for the single array matrix
+ * that correspond to the given row and column.
+ */
 int sa_index(int cols, int r, int c);
 
+/*
+ * Print a single array matrix.
+ */
+void print_sa_matrix(double *x, int rows, int cols);
+
 double **create_matrix(int rows, int cols);
 void destroy_matrix(double **x, int rows);
-
 void print_matrix(double **x, int rows, int cols);