cosmetic cleanup

include/ucore/val_str.h

@@ -30,8 +30,8 @@ const char *uc_vs_search(unsigned int val, const struct UCValStr *array);
  * @return the string associated with @val or NULL
  */
 const char *uc_vs_bsearch(unsigned int val, 
-                                       const struct UCValStr *array,
-                                       size_t array_len);
+                          const struct UCValStr *array,
+                          size_t array_len);
 
 
 #endif

src/val_str.c

@@ -20,22 +20,22 @@ const char *uc_vs_search(unsigned int val, const struct UCValStr *array)
 }
 
 const char *uc_vs_bsearch(unsigned int val, 
-                                       const struct UCValStr *array,
-                                       size_t array_len)
+                          const struct UCValStr *array,
+                          size_t array_len)
 {
     size_t i = array_len;
     const struct UCValStr *start = array;
 
     while (i != 0) {
         const struct UCValStr *curr;
-        curr = start + i / 2;
+        curr = &start[i / 2]; //middle 
 
         if (curr->val == val) {
             return curr->str;
         }
 
         if (curr->val < val) {
-            start = curr + 1;
+            start = curr + 1; //right half
             i--;
         }