Remaining update

BasicSolver/2D-seq/src/main.c

@@ -14,6 +14,26 @@
 #include "solver.h"
 #include "timing.h"
 
+static FILE* initResidualWriter()
+{
+    FILE* fp;
+    fp = fopen("residual.dat", "w");
+
+    if (fp == NULL) {
+        printf("Error!\n");
+        exit(EXIT_FAILURE);
+    }
+
+    return fp;
+
+}
+
+static void writeResidual(FILE* fp, double ts, double res)
+{
+    fprintf(fp, "%f, %f\n", ts, res);
+}
+
+
 int main(int argc, char** argv)
 {
     double timeStart, timeStop;