diff --git a/DESCRIPTION b/DESCRIPTION
index fa37677..d3c4374 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -35,3 +35,4 @@ NeedsCompilation: yes
 Maintainer: Wei-Chen Chen <wccsnow@gmail.com>
 Repository: CRAN
 Date/Publication: 2018-08-01 15:20:14 UTC
+RoxygenNote: 6.1.1
diff --git a/R/spmd_send.r b/R/spmd_send.r
index b2361c3..414cfff 100644
--- a/R/spmd_send.r
+++ b/R/spmd_send.r
@@ -4,6 +4,17 @@
 ### Note: send/recv divides data in segments for data are too long.
 ###       probe/count may not get the correct length if data are too long.
 
+spmd.check.send <- function(obj,
+                            obj.type,
+                            rank.dest,
+                            comm,
+                            tag)
+{
+    ct <- c(obj.type, length(obj))
+    .Call("spmd_send_double", as.numeric(ct), as.integer(rank.dest),
+          as.integer(tag), as.integer(comm), PACKAGE = "pbdMPI")
+}
+
 ### Default method.
 spmd.send.default <- function(x,
     rank.dest = .pbd_env$SPMD.CT$rank.dest, tag = .pbd_env$SPMD.CT$tag,
@@ -12,10 +23,13 @@ spmd.send.default <- function(x,
   ### TODO: implement array/matrix as the way done in allreduce.
   xx <- serialize(x, NULL)    ### Serialize everything who calls default.
   if(check.type){
-    ct <- c(.pbd_env$SPMD.DT$raw.object, length(xx))
-    .Call("spmd_send_integer", ct, as.integer(rank.dest),
-          as.integer(tag), as.integer(comm), PACKAGE = "pbdMPI")
+      spmd.check.send(xx,
+                      obj.type = .pbd_env$SPMD.DT$raw.object,
+                      rank.dest = rank.dest,
+                      comm = comm,
+                      tag = tag)
   }
+    
   .Call("spmd_send_raw", xx, as.integer(rank.dest), as.integer(tag),
         as.integer(comm), PACKAGE = "pbdMPI")
   invisible()
@@ -28,9 +42,11 @@ spmd.send.integer <- function(x,
     comm = .pbd_env$SPMD.CT$comm,
     check.type = .pbd_env$SPMD.CT$check.type){
   if(check.type){
-    ct <- as.double(c(.pbd_env$SPMD.DT$integer, length(x)))
-    .Call("spmd_send_double", ct, as.integer(rank.dest),
-          as.integer(tag), as.integer(comm), PACKAGE = "pbdMPI")
+      spmd.check.send(x,
+                      obj.type = .pbd_env$SPMD.DT$integer,
+                      rank.dest = rank.dest,
+                      comm = comm,
+                      tag = tag)
   }
   .Call("spmd_send_integer", x, as.integer(rank.dest), as.integer(tag),
         as.integer(comm), PACKAGE = "pbdMPI")
@@ -42,9 +58,11 @@ spmd.send.double <- function(x,
     comm = .pbd_env$SPMD.CT$comm,
     check.type = .pbd_env$SPMD.CT$check.type){
   if(check.type){
-    ct <- as.double(c(.pbd_env$SPMD.DT$double, length(x)))
-    .Call("spmd_send_double", ct, as.integer(rank.dest),
-          as.integer(tag), as.integer(comm), PACKAGE = "pbdMPI")
+      spmd.check.send(x,
+                      obj.type = .pbd_env$SPMD.DT$double,
+                      rank.dest = rank.dest,
+                      comm = comm,
+                      tag = tag)
   }
   .Call("spmd_send_double", x, as.integer(rank.dest), as.integer(tag),
         as.integer(comm), PACKAGE = "pbdMPI")
@@ -56,9 +74,11 @@ spmd.send.raw <- function(x,
     comm = .pbd_env$SPMD.CT$comm,
     check.type = .pbd_env$SPMD.CT$check.type){
   if(check.type){
-    ct <- as.double(c(.pbd_env$SPMD.DT$raw, length(x)))
-    .Call("spmd_send_double", ct, as.integer(rank.dest),
-          as.integer(tag), as.integer(comm), PACKAGE = "pbdMPI")
+      spmd.check.send(x,
+                      obj.type = .pbd_env$SPMD.DT$raw,
+                      rank.dest = rank.dest,
+                      comm = comm,
+                      tag = tag)
   }
   .Call("spmd_send_raw", x, as.integer(rank.dest), as.integer(tag),
         as.integer(comm), PACKAGE = "pbdMPI")
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