error exit

Trigger err_exit module to stop the SystemC simualtion if the data check
fails

raven_spn/src/raven_spn.cpp

@@ -42,9 +42,12 @@ bool check_results(int addr, int k) {
 	bool result = 0;
 	int  step = 500;
 	double *res_base = (double*) (addr);
+	int * error_exit = (int *)0xF0000000;
+
 	for (int i = 0; i < step; i++) {
 		if (!double_equals(res_base[i] * ln2, ref_data.at(k + i))) {
 			printf("XSPN ref %d comparison FAILED\n", k + i);
+			*error_exit = 0x1;
 			result = 1;
 		}
 	}