1 files changed, 8 insertions, 4 deletions
diff --git a/mbw.c b/mbw.c
index 3a02826..6251ea9 100644
--- a/mbw.c
+++ b/mbw.c
@@ -27,6 +27,8 @@
  * MBW memory bandwidth benchmark
  *
  * 2006, 2012 Andras.Horvath@gmail.com
+ * 2013 j.m.slocum@gmail.com 
+ * (Special thanks to Stephen Pasich)
  *
  * http://github.com/raas/mbw
  *
@@ -105,12 +107,14 @@ double worker(unsigned long long asize, long *a, long *b, int type, unsigned lon
         /* timer stops */
         gettimeofday(&endtime, NULL);
     } else if(type==2) { /* memcpy block test */
+        char* aa = (char*)a;
+        char* bb = (char*)b;
         gettimeofday(&starttime, NULL);
-        for(t=0; t<array_bytes; t+=block_size) {
-            b=mempcpy(b, a, block_size);
+        for (t=array_bytes; t >= block_size; t-=block_size, aa+=block_size){
+            bb=mempcpy(bb, aa, block_size);
         }
-        if(t>array_bytes) {
-            b=mempcpy(b, a, t-array_bytes);
+        if(t) {
+            bb=mempcpy(bb, aa, t);
         }
         gettimeofday(&endtime, NULL);
     } else { /* dumb test */