diff --git a/build_linux64/libamsmathutil25.linux64.a b/build_linux64/libamsmathutil25.linux64.a
index 316d743..02d26cf 100644
Binary files a/build_linux64/libamsmathutil25.linux64.a and b/build_linux64/libamsmathutil25.linux64.a differ
diff --git a/build_linux64/objstore/amsmathtuil25_test1.o b/build_linux64/objstore/amsmathtuil25_test1.o
index 12ad038..a5c071b 100644
Binary files a/build_linux64/objstore/amsmathtuil25_test1.o and b/build_linux64/objstore/amsmathtuil25_test1.o differ
diff --git a/build_linux64/objstore/amsmathutiil25_random.o b/build_linux64/objstore/amsmathutiil25_random.o
index b3dcf6b..e34229d 100644
Binary files a/build_linux64/objstore/amsmathutiil25_random.o and b/build_linux64/objstore/amsmathutiil25_random.o differ
diff --git a/build_linux64/objstore/amsmathutil25_amsarray_sort.o b/build_linux64/objstore/amsmathutil25_amsarray_sort.o
index 4960f3e..37bc1a2 100644
Binary files a/build_linux64/objstore/amsmathutil25_amsarray_sort.o and b/build_linux64/objstore/amsmathutil25_amsarray_sort.o differ
diff --git a/build_linux64/tests b/build_linux64/tests
index aed5fd0..8c59cb5 100644
Binary files a/build_linux64/tests and b/build_linux64/tests differ
diff --git a/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp b/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
index c2fcb73..b782230 100644
--- a/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
+++ b/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
@@ -39,12 +39,12 @@ namespace ams
         amsarray_size_t lmin = 0;
         T defval = T();
 
-        void* test_ptr = malloc(16);
-        if(test_ptr) free(test_ptr);
-        else {
-            printf("HEAP CORRUPTED before reserve()!\n");
-            return amsarray_failure;
-        }
+        // void* test_ptr = malloc(16);
+        // if(test_ptr) free(test_ptr);
+        // else {
+        //     printf("HEAP CORRUPTED before reserve()!\n");
+        //     return amsarray_failure;
+        // }
 
         if(_newcap<=0)
         {
@@ -73,7 +73,8 @@ namespace ams
         if(data!=NULL)
         {
             lmin = (_newcap>=reserved) ? reserved : _newcap;
-            ams::buffer_cast_copy<T,T>(newdata,data,lmin);
+            //ams::buffer_cast_copy<T,T>(newdata,data,lmin);
+            ams::buffer_cast_move<T,T>(newdata,data,lmin);
         }
         //ams::buffer_set<T>(newdata,reserved,_newcap,defval);
 
@@ -437,7 +438,7 @@ template<typename T> int amsarray<T>::insert(amsarray_size_t ind, const T& val)
                 for(I=oldlen;I>=ind+1;I--)
                 {
                     
-                    this->data[I] = this->data[I-1];
+                    this->data[I] = std::move(this->data[I-1]);
                 }
                 this->data[ind] = val;
             }
@@ -501,7 +502,7 @@ template<typename T> int amsarray<T>::insert(amsarray_size_t ind, const amsarray
             {
                 for(I=oldlen;I>=ind+other.length;I--)
                 {
-                    this->data[I] = this->data[I-1];
+                    this->data[I] = std::move(this->data[I-1]);
                 }
                 for(I=ind;I<ind+other.length;I++)
                 {
@@ -568,7 +569,7 @@ template<typename T> int amsarray<T>::erase(amsarray_size_t ind)
     {
         for(I=ind;I<this->length-1;I++)
         {
-            this->data[I] = this->data[I+1];
+            this->data[I] = std::move(this->data[I+1]);
         }
         this->data[this->length-1] = T();
     }
diff --git a/include/amsmathutil25/util/amsmathutil25_bufferops.hpp b/include/amsmathutil25/util/amsmathutil25_bufferops.hpp
index dab004c..87f7fdb 100644
--- a/include/amsmathutil25/util/amsmathutil25_bufferops.hpp
+++ b/include/amsmathutil25/util/amsmathutil25_bufferops.hpp
@@ -31,6 +31,23 @@ namespace ams
     //threaded copy of bufferfrom to bufferto
     template<typename T1, typename T2> int buffer_cast_copy_unthreaded(T1* bufferto, const T2* bufferfrom, buffer_size_t N);
 
+
+
+    //threaded std::move of bufferfrom[offsetfrom + I] to bufferto[offsetto+I] I = [0,N)
+    template<typename T1, typename T2> int buffer_cast_move(T1* bufferto, const T2* bufferfrom, 
+        buffer_size_t offsetto, buffer_size_t offsetfrom, buffer_size_t N);
+
+    //threaded std::move of bufferfrom to bufferto
+    template<typename T1, typename T2> int buffer_cast_move(T1* bufferto, const T2* bufferfrom, buffer_size_t N);
+
+    //threaded std::move of bufferfrom[offsetfrom + I] to bufferto[offsetto+I] I = [0,N)
+    template<typename T1, typename T2> int buffer_cast_move_unthreaded(T1* bufferto, const T2* bufferfrom, 
+        buffer_size_t offsetto, buffer_size_t offsetfrom, buffer_size_t N);
+
+    //threaded std::move of bufferfrom to bufferto
+    template<typename T1, typename T2> int buffer_cast_move_unthreaded(T1* bufferto, const T2* bufferfrom, buffer_size_t N);
+
+
 }; //end namespace ams
 
 #include <amsmathutil25/util/amsmathutil25_bufferops_impl.hpp>
diff --git a/include/amsmathutil25/util/amsmathutil25_bufferops_impl.hpp b/include/amsmathutil25/util/amsmathutil25_bufferops_impl.hpp
index d48a5b2..c4b9df1 100644
--- a/include/amsmathutil25/util/amsmathutil25_bufferops_impl.hpp
+++ b/include/amsmathutil25/util/amsmathutil25_bufferops_impl.hpp
@@ -225,6 +225,111 @@ namespace ams
     }
 
 
+    ////////////////////
+    //buffer_cast_move//
+    ////////////////////
+
+    template<typename T1, typename T2> void buffer_cast_move_tf(
+        int threadnum,
+        int nthread,
+        T1 *bufferto,
+        const T2 *bufferfrom,
+        buffer_size_t offsetto,
+        buffer_size_t offsetfrom,
+        buffer_size_t N
+    )
+    {
+        buffer_size_t I,I0,I1,Is;
+
+        // Is = N/(nthread-1);
+        // Is = (Is<=0) ? 1 : Is;
+        // I0 = Is*(threadnum);
+        // I1 = Is*(threadnum+1);
+        // I0 = (I0<=0) ? 0 : I0;
+        // I1 = (I1<=0) ? 0 : I1;
+        // I0 = (I0>N) ? N : I0;
+        // I1 = (I1>N) ? N : I1;
+
+        Is = (nthread<=0) ? N : N/nthread;
+        I0 = Is*(threadnum);
+        I1 = (threadnum>=(nthread-1)) ? N : Is*(threadnum+1);
+        
+        // I0 = (I0<=0) ? 0 : I0;
+        // I1 = (I1<=0) ? 0 : I1;
+        I0 = (I0>N) ? N : I0;
+        I1 = (I1>N) ? N : I1;
+
+        for(I=I0;I<I1;I++)
+        {
+            bufferto[I + offsetto] = std::move((T1) (bufferfrom[I + offsetfrom]));
+        }
+        
+        return;
+    }
+
+    //threaded copy of bufferfrom[offsetfrom + I] to bufferto[offsetto+I] I = [0,N)
+    template<typename T1, typename T2> int buffer_cast_move(T1* bufferto, const T2* bufferfrom, 
+        buffer_size_t offsetto, buffer_size_t offsetfrom, buffer_size_t N)
+    {
+        int ret = amsmathutil25_success;
+        int res;
+        res = ams::threaded_execute(
+            &buffer_cast_copy_tf<T1,T2>,(int64_t) N,
+            bufferto,bufferfrom,offsetto,offsetfrom,N
+        );
+        ret = res;
+
+        return ret;
+    }
+
+    //threaded copy of bufferfrom to bufferto
+    template<typename T1, typename T2> int buffer_cast_move(T1* bufferto, const T2* bufferfrom, buffer_size_t N)
+    {
+        int ret = amsmathutil25_success;
+        buffer_size_t I;
+
+        if(N<amsmathutil25_threadpsz)
+        {
+            for(I=0;I<N;I++) bufferto[I] = (T1) bufferfrom[I];
+        }
+        else
+        {
+            ret = buffer_cast_copy<T1,T2>(bufferto,bufferfrom,0,0,N);
+        }
+
+        return ret;
+    }
+
+    //threaded copy of bufferfrom[offsetfrom + I] to bufferto[offsetto+I] I = [0,N)
+    template<typename T1, typename T2> int buffer_cast_move_unthreaded(T1* bufferto, const T2* bufferfrom, 
+        buffer_size_t offsetto, buffer_size_t offsetfrom, buffer_size_t N)
+    {
+        int ret = amsmathutil25_success;
+        buffer_size_t I;
+
+        for(I=0;I<N;I++)
+        {
+            bufferto[I+offsetto] = std::move((T1) bufferfrom[I+offsetfrom]);
+        }
+
+        return ret;
+    }
+
+    //threaded copy of bufferfrom to bufferto
+    template<typename T1, typename T2> int buffer_cast_move_unthreaded(T1* bufferto, const T2* bufferfrom, buffer_size_t N)
+    {
+        int ret = amsmathutil25_success;
+        buffer_size_t I;
+
+        for(I=0;I<N;I++)
+        {
+            bufferto[I] = std::move((T1) bufferfrom[I]);
+        }
+
+        return ret;
+    }
+
+
 }; //end namespace ams
 
 #endif
diff --git a/src/main.cpp b/src/main.cpp
index 279b4e9..6eb0bbd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -8,14 +8,14 @@ int main(int argc, char* argv[])
     int ret = 0;
     printf("ams c++ math and utility library tests.\n");
 
-    //ams::amsmathutil25::test_amsarray1();
-    //ams::amsmathutil25::test_amsarray2();
-    //ams::amsmathutil25::test_amsarray_select();
-    //ams::amsmathutil25::test_amsarray_sort1();
-    //test_amsarray_insertdelete1();
-    //test_amsarray_insertdelete2();
-    //test_amsarray_minimal();
-    //test_amsarray_arrayinsert();
+    ams::amsmathutil25::test_amsarray1();
+    ams::amsmathutil25::test_amsarray2();
+    ams::amsmathutil25::test_amsarray_select();
+    ams::amsmathutil25::test_amsarray_sort1();
+    test_amsarray_insertdelete1();
+    test_amsarray_insertdelete2();
+    test_amsarray_minimal();
+    test_amsarray_arrayinsert();
 
     
     return ret;