more verbosity in cache test

src/cache_test.c

@@ -17,7 +17,7 @@ void measure_multiple_accesses(void (*addr)(void), size_t num_accesses, size_t*
     }
 }
 
-size_t find_crossover_point(size_t* hits, size_t* misses, size_t num_accesses) 
+void find_crossover_point(size_t* hits, size_t* misses, size_t num_accesses)
 {
     size_t hit_sum = 0, miss_sum = 0;
     
@@ -30,7 +30,11 @@ size_t find_crossover_point(size_t* hits, size_t* misses, size_t num_accesses)
     size_t avg_hit = hit_sum / num_accesses;
     size_t avg_miss = miss_sum / num_accesses;
 
-    return (avg_hit + avg_miss) / 2;  // Midpoint as threshold
+    printf("Average hit time: %zu\n", avg_hit);
+    printf("Average miss time: %zu\n", avg_miss);
+
+    size_t threshold = (avg_hit + avg_miss) / 2;  // Midpoint as threshold
+    printf("Midpoint: %zu\n", threshold);
 }
 
 int main()
@@ -46,9 +50,7 @@ int main()
 
     // We use the addr. of main for our test, but anything works.
     measure_multiple_accesses((void*) main, NUM_ACCESSES, hits, misses);
-
-    size_t threshold = find_crossover_point(hits, misses, NUM_ACCESSES);
-    printf("Suggested threshold: %zu\n", threshold);
+    find_crossover_point(hits, misses, NUM_ACCESSES);
 
     free(hits);
     free(misses);