--- a/example/Miller_Rabin/spe/Prime.cc	Tue Nov 01 19:23:11 2011 +0900
+++ b/example/Miller_Rabin/spe/Prime.cc	Thu Nov 03 20:40:17 2011 +0900
@@ -62,18 +62,19 @@
 	U64 start = (U64)smanager->get_param(0);	/* 素数判定の開始地点 */
 	U64 end   = (U64)smanager->get_param(1);	/* 素数判定の終了地点 */
 	U64 range = end - start;					/* 判定する範囲		  */
+	U64 index_range = range >> 1;
 
 	/* 判定結果を収める配列を受け取る */
 	bool *output = (bool*)smanager->get_output(wbuf, 0);
 
 	/* 初期化 */
-	for (U64 i = 0; i < range; i++){
-		output[i] = true;
+	for (U64 i = 0; i < index_range; i++){
+		output[i] = false;
 	}
 
-	for (U64 i = start + 1,index = 0; index < range; i += 2, index++) {
-		if (!isPrime(i)) {
-			output[index]  =  false;
+	for (U64 i = start + 1,index = 0; i < end ; i += 2, index++) {
+		if (isPrime(i)) {
+			output[index] = true;
 		}
 	}
 	return 0;