===================================================================
RCS file: /home/cvs/OpenXM/src/ox_toolkit/ox.c,v
retrieving revision 1.38
retrieving revision 1.41
diff -u -p -r1.38 -r1.41
--- OpenXM/src/ox_toolkit/ox.c	2015/08/04 05:24:44	1.38
+++ OpenXM/src/ox_toolkit/ox.c	2015/08/05 00:59:05	1.41
@@ -1,5 +1,5 @@
 /* -*- mode: C; coding: euc-japan -*- */
-/* $OpenXM: OpenXM/src/ox_toolkit/ox.c,v 1.37 2014/04/07 04:00:10 iwane Exp $ */
+/* $OpenXM: OpenXM/src/ox_toolkit/ox.c,v 1.40 2015/08/04 10:19:31 noro Exp $ */
 
 /* 
    This module includes functions for sending/receiveng CMO's.
@@ -756,33 +756,26 @@ static int send_mpz(OXFILE *oxfp, mpz_ptr mpz)
     int len = abs(mpz->_mp_size) * n;
 	int *ptr = (int *)mpz->_mp_d;
     int size;
-    send_int32(oxfp, mpz->_mp_size * n);
-#if 0
     if (len > 0 && ptr[len-1] == 0) {
         len--;
     }
     size = mpz->_mp_size < 0 ? -len : len;
     send_int32(oxfp, size);
-#endif
     for(i=0; i<len; i++) {
         send_int32(oxfp, ptr[i]);
     }
     return 0;
 }
 
-void send_int64(OXFILE *oxfp,UL64 a)
+int send_int64(OXFILE *oxfp,UL64 a)
 {
-  send_int32(oxfp, a>>32);
-  send_int32(oxfp, a&0xffffffff);
+  return oxfp->send_double(oxfp,((double *)&a)[0]);
 }
 
 UL64 receive_int64(OXFILE *oxfp)
 {
-  UL64 u,l;
-
-  u = receive_int32(oxfp);
-  l = receive_int32(oxfp);
-  return (u<<32)|l;
+	double d = receive_double(oxfp);
+  return ((UL64 *)&d)[0];
 }
 
 static void receive_mpfr(OXFILE *oxfp, mpfr_ptr mpfr)