variable names clarified

MANIFEST

@@ -0,0 +1,15 @@
+Changes
+damerau-int.c
+examples/benchmark.pl
+examples/fuzzy_name_search.pl
+lib/Text/Levenshtein/Damerau/XS.pm
+LICENSE
+Makefile.PL
+MANIFEST			This list of files
+README
+t/00_compile.t
+t/01_imports.t
+t/02_xs_edistance.t
+XS.xs
+xt/cxs_edistance.t
+xt/pod.t

damerau-int.c

@@ -71,7 +71,7 @@ static void dict_free(item* head){
 static int distance(unsigned int src[],unsigned int tgt[],unsigned int x,unsigned int y,unsigned int maxDistance){
   item *head = NULL;
   unsigned int xy_max = MAX(x,y);
-  unsigned int db,i1,j1,i,j;
+  unsigned int swapCount,targetCharCount,prevSwapCount,i,j;
   unsigned int *scores = malloc( (x + 2) * (y + 2) * sizeof(unsigned int) );
   unsigned int score_ceil = x + y;
 
@@ -88,25 +88,25 @@ static int distance(unsigned int src[],unsigned int tgt[],unsigned int x,unsigne
     scores[(i+1) * (y + 2) + 1] = i;
     scores[(i+1) * (y + 2) + 0] = score_ceil;
 
-    db = 0;
+    swapCount = 0;
     for(j=1;j<=y;j++){
       if(i == 1) {
           head = uniquePush(head,tgt[j]);
           scores[1 * (y + 2) + (j + 1)] = j;
           scores[0 * (y + 2) + (j + 1)] = score_ceil;
       }
 
-      i1 = find(head,tgt[j-1])->value;
-      j1 = db;
+      targetCharCount = find(head,tgt[j-1])->value;
+      prevSwapCount = swapCount;
 
       if(src[i-1] == tgt[j-1]){
         scores[(i+1) * (y + 2) + (j + 1)] = scores[i * (y + 2) + j];
-        db = j;
+        swapCount = j;
       }else{ 
         scores[(i+1) * (y + 2) + (j + 1)] = MIN(scores[i * (y + 2) + j], MIN(scores[(i+1) * (y + 2) + j], scores[i * (y + 2) + (j + 1)])) + 1;
       } 
 
-      scores[(i+1) * (y + 2) + (j + 1)] = MIN(scores[(i+1) * (y + 2) + (j + 1)], (scores[i1 * (y + 2) + j1] + i - i1 - 1 + j - j1));
+      scores[(i+1) * (y + 2) + (j + 1)] = MIN(scores[(i+1) * (y + 2) + (j + 1)], (scores[targetCharCount * (y + 2) + prevSwapCount] + i - targetCharCount - 1 + j - prevSwapCount));
     }
 
     /* We will return -1 here if the */
@@ -127,4 +127,4 @@ static int distance(unsigned int src[],unsigned int tgt[],unsigned int x,unsigne
   free(scores);
   return score;
   }
-}
+}