diff --git a/dimension_t/src/dimension_t/dimension_t.c b/dimension_t/src/dimension_t/dimension_t.c
index a973273..f91a148 100644
--- a/dimension_t/src/dimension_t/dimension_t.c
+++ b/dimension_t/src/dimension_t/dimension_t.c
@@ -121,6 +121,30 @@ dimension* sub_dim_tail(dimension *root, size_t subdim){
   }
   return NULL;
 }
+
+/*
+void split_dim_part(dimension *root, dimension **part_1, dimension **part_2, size_t sz_nb_minus_part ) */
+void split_dim_part(dimension *root, dimension **part_1, dimension **part_2, size_t pivotSplit, size_t rangeInPivot ) {
+  if(pivotSplit < root->size){
+  if(rangeInPivot <  root->perm[pivotSplit]){
+    //size_t sz_part1= (root->rank * sz_nb_minus_part)/(root->perm[(root->size)-1]);
+    //printf("sz_part1 :%ld \n",sz_part1);
+    *part_1 = init_copy_dim(root->perm, root->size);
+    ((*part_1)->perm[pivotSplit]) -= rangeInPivot;
+    updateRankDim(*part_1);
+    /*if(sz_nb_minus_part <2)
+      *part_2 = init_copy_dim((root->perm), root->size-1 );
+    else{*/
+      *part_2 = init_copy_dim((root->perm), root->size );
+      (*part_2)->perm[pivotSplit] = rangeInPivot ;
+    //}
+    updateRankDim(*part_2);
+  }
+  }
+}
+
+
+
 void add_dimension(dimension **d, dimension *d0, dimension *d1) {
     (*d) = create_dim(d0->size + d1->size);
     for (size_t i = 0; i < d0->size; i++) (*d)->perm[i] = d0->perm[i];
@@ -146,10 +170,13 @@ void min_dimension(dimension **d, dimension *d0, dimension *d1) {
 
 void printDebug_dimension(dimension *d,char *msg){
 
-  printf("%s / dim->size = %ld | dim->rank = %ld \n",msg,d->size,d->rank);
+  printf("(%s)->size = %ld | (%s)->rank = %ld \n",msg,d->size,msg,d->rank);
   for(size_t i=0; i<d->size; ++i)
     printf("[%ld: %ld] |", i,d->perm[i]);
-  printf("\n");
+  if(endian)
+    printf("litle endian (true)\n");
+  else
+    printf("litle endian (false) \n");
 }
 
 void updateRankDim(dimension *dim){
diff --git a/dimension_t/src/dimension_t/dimension_t.h b/dimension_t/src/dimension_t/dimension_t.h
index dcdafd0..c04b012 100644
--- a/dimension_t/src/dimension_t/dimension_t.h
+++ b/dimension_t/src/dimension_t/dimension_t.h
@@ -5,6 +5,15 @@
 
 extern bool endian;
 
+
+bool isLessEqThan(long int a, long int b) ;
+bool isLessThan(long int a, long int b) ;
+bool isGreatEqThan(long int a, long int b)  ;
+bool isGreatThan(long int a, long int b)  ;
+long int incr(long int i) ;
+long int decr(long int i) ;
+
+
 typedef struct PERMUTATION_TYPE_SIZE_T dimension ;
 
 dimension * create_dim(size_t size);
@@ -22,6 +31,8 @@ dimension* sub_copy_minus_dim_tail(dimension *t, size_t minusSubdim);
 dimension* sub_copy_dim_head(dimension *t, size_t sub_copydim);
 dimension* sub_copy_dim_tail(dimension *t, size_t sub_copydim);
 
+void split_dim_part(dimension *root, dimension **part_1, dimension **part_2, size_t pivotSplit, size_t rangeInPivot );
+
 void add_copy_dimension(dimension **d, dimension *d0, dimension *d1);
 void min_copy_dimension(dimension **d, dimension *d0, dimension *d1);
 
diff --git a/dimension_t/test/is_good.c b/dimension_t/test/is_good.c
index 0c18e1c..d78ab21 100644
--- a/dimension_t/test/is_good.c
+++ b/dimension_t/test/is_good.c
@@ -22,6 +22,7 @@ TEST(dimension0){
 
   EXPECT_EQ(D->size,5);
 
+  free_dimension(D);
 }
 TEST(rank){
   dimension *D=create_dim(4);
@@ -33,7 +34,71 @@ TEST(rank){
   updateRankDim(D);
   EXPECT_EQ(D->rank, 180);
 
+  free_dimension(D);
 }
+TEST(SplitDim){
+  dimension *D=create_dim(4);
+  D->perm[0]=2;
+  D->perm[1]=3;
+  D->perm[2]=5;
+  D->perm[3]=6;
+  
+  updateRankDim(D);
+  printDebug_dimension(D," D root");  
+
+  dimension *d_part1 = NULL,*d_part2=NULL;
+
+ split_dim_part(D, &d_part1, &d_part2, 1, 2); 
+
+  printDebug_dimension(d_part1," part1 from Root");  
+  printDebug_dimension(d_part2," part2 from Root");  
+
+  dimension *ad;
+
+  add_dimension(&ad,d_part1, d_part2);
+  printDebug_dimension(D," D root");  
+  printDebug_dimension(ad," ad ");  
+
+
+  free_dimension(D);
+  free_dimension(ad);
+  free(d_part1);
+  free(d_part2);
+}
+
+TEST(SplitDim_2){
+  dimension *D=create_dim(4);
+  D->perm[0]=2;
+  D->perm[1]=3;
+  D->perm[2]=5;
+  D->perm[3]=6;
+  
+  updateRankDim(D);
+  printDebug_dimension(D," D root");  
+
+  dimension *d_part1 = NULL,*d_part2=NULL;
+
+ split_dim_part(D, &d_part1, &d_part2, 3, 2); 
+
+  printDebug_dimension(d_part1," part1 from Root");  
+  printDebug_dimension(d_part2," part2 from Root");  
+
+  dimension *ad;
+
+  add_dimension(&ad,d_part1, d_part2);
+  printDebug_dimension(D," D root");  
+  printDebug_dimension(ad," ad ");  
+
+
+  free_dimension(D);
+  free_dimension(ad);
+  free(d_part1);
+  free(d_part2);
+}
+
+
+
+
 TEST(SubDim){
   dimension *D=create_dim(4);
   D->perm[0]=2;
@@ -49,6 +114,9 @@ TEST(SubDim){
   dimension *d_tail2 = sub_minus_dim_tail(D,2);
   EXPECT_EQ(d_tail2->rank, 5*6);
 
+  free_dimension(D);
+  free(d_tail2);
+  free(d_head2);
 }
 
 TEST(SubDim){
@@ -67,6 +135,9 @@ TEST(SubDim){
   dimension *d_tail2 = sub_minus_dim_tail(D,2);
   EXPECT_EQ(d_tail2->rank, 5*6);
 
+  free_dimension(D);
+  free(d_tail2);
+  free(d_head2);
 }
 
 TEST(Coord_linear){
@@ -86,6 +157,8 @@ TEST(Coord_linear){
   }
   
   EXPECT_EQ(line, LineFromCoord(coord, D));  
+  free_dimension(D);
+  free(coord);
 }
 
 int main(int argc, char **argv){
diff --git a/neuron_t/src/neuron_t.c b/neuron_t/src/neuron_t.c
deleted file mode 100644
index e69de29..0000000
diff --git a/neuron_t/src/neuron_t.h b/neuron_t/src/neuron_t.h
deleted file mode 100644
index 15c0ac4..0000000
--- a/neuron_t/src/neuron_t.h
+++ /dev/null
@@ -1,41 +0,0 @@
-#ifndef __NEURON_T_C__H
-#define __NEURON_T_C__H
-
-#include <stdlib.h>
-
-#include "tools_t/tools_t.h"
-#include "permutation_t/permutation_t.h"
-
-typedef PERMUTATION_TYPE_FLOAT vectf; 
-
-struct neuron {
-  size_t id;
-  struct vectf *x; /* input */
-  struct vectf *w_in; /* weight link in */
-  struct vectf *w_out; /* weight link out */
-  struct vectf *d; /* delta */
-};
-
-struct func {
-  float (*func_act)(struct neuron *nr); /* function activation */
-  float (*d_func_act)(struct neuron *nr); /* derivate func act */
-  float (*func_agreg)(struct neuron *nr); /* function aggregation */
-};
-
-#if 0
-
-#define GENERATE_NEURON(type)                       \
-  struct NEURON_##type{                                      \
-    type *x;                                                      \
-    type *w;    \
-  };                                                              \
-  typedef struct NEURON_##type NEURON_##type;           \
-  NEURON_##type * CREATE_NEURON_##type(size_t id/*TYPE_##type*/);    \
-  bool IS_NEURON_##type(NEURON_##type *st);             \
-
-GENERATE_NEURON(TYPE_FLOAT)
-GENERATE_NEURON(TYPE_DOUBLE)
-
-#endif
-
-#endif /*__NEURON_T_C__H*/
diff --git a/tensor_t/src/tensor_t/tensor_t.c b/tensor_t/src/tensor_t/tensor_t.c
index 08ab0d4..899ff0a 100644
--- a/tensor_t/src/tensor_t/tensor_t.c
+++ b/tensor_t/src/tensor_t/tensor_t.c
@@ -23,6 +23,14 @@ void printArraySzt(size_t *a, size_t sz,char *msg){
   printf("\n");
 }
 
+/*
+bool isLessEqThan(long int a, long int b) { return a <= b; }
+bool isLessThan(long int a, long int b) { return a < b; }
+bool isGreatEqThan(long int a, long int b) { return a >= b; }
+bool isGreatThan(long int a, long int b) { return a > b; }
+long int incr(long int i) { return i + 1; }
+long int decr(long int i) { return i - 1; }
+*/
 
 #define FREE_COORD_\
   free(coord0);\
@@ -53,7 +61,46 @@ void printArraySzt(size_t *a, size_t sz,char *msg){
     return r_tens;\
   }\
 \
-  tensor_##type* CREATE_TENSOR_FROM_CPY_DIM_##type(dimension *dim){\
+tensor_##type* init_tensor_head_##type(tensor_##type *troot ,dimension *dim){\
+    tensor_##type *r_tens=malloc(sizeof(tensor_##type));\
+    updateRankDim(dim);\
+    r_tens->dim = dim;\
+    r_tens->x = troot->x;\
+    return r_tens;\
+  }\
+\
+ tensor_##type* init_tensor_tail_##type(tensor_##type *troot ,dimension *dim){\
+    tensor_##type *r_tens=malloc(sizeof(tensor_##type));\
+    updateRankDim(dim);\
+    r_tens->dim = dim;\
+    r_tens->x = troot->x + ((troot->dim)->rank - dim->rank);\
+    return r_tens;\
+  }\
+\
+\
+tensor_##type* init_copy_tensor_head_##type(tensor_##type *troot ,dimension *dim){\
+    tensor_##type *r_tens=malloc(sizeof(tensor_##type));\
+    updateRankDim(dim);\
+    r_tens->dim = dim;\
+    /*r_tens->x = troot->x;*/\
+    for(size_t i=0; i<dim->rank;++i)\
+      r_tens->x[i]=troot->x[i];\
+    return r_tens;\
+  }\
+\
+ tensor_##type* init_copy_tensor_tail_##type(tensor_##type *troot ,dimension *dim){\
+    tensor_##type *r_tens=malloc(sizeof(tensor_##type));\
+    updateRankDim(dim);\
+    r_tens->dim = dim;\
+    /*r_tens->x = troot->x + ((troot->dim)->rank - dim->rank);*/\
+    r_tens->x = malloc(sizeof(type)*dim->rank);\
+    for(size_t dRank=(troot->dim)->rank - dim->rank, i=0; i<dim->rank;++i)\
+      r_tens->x[i]=troot->x[i+dRank];\
+    return r_tens;\
+  }\
+\
+\
+ tensor_##type* CREATE_TENSOR_FROM_CPY_DIM_##type(dimension *dim){\
     tensor_##type *r_tens=malloc(sizeof(tensor_##type));\
     r_tens->dim = init_copy_dim(dim->perm,dim->size);\
     r_tens->x = malloc(sizeof(type)*dim->rank);\
@@ -67,7 +114,16 @@ void printArraySzt(size_t *a, size_t sz,char *msg){
       free(tens);\
     }\
   }\
-/*  tensor_##type * sub_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim){\
+  void init_random_x_##type(tensor_##type *M, type minR, type maxR,  int randomRange){\
+    srand(time(NULL));\
+    int randVal;\
+    for(size_t i =0; i<(M->dim)->rank;++i){\
+      randVal = rand() % randomRange;\
+      M->x[i]=minR + (maxR-minR)*randVal  / randomRange ;\
+    \
+    }\
+  }\
+  tensor_##type * sub_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim){\
     dimension *rdim= rootens->dim;\
     dimension *dS_t = sub_minus_dim_tail(rdim,rdim->size - minuSubdim);\
     if(rankInDim < dS_t->rank){\
@@ -157,7 +213,7 @@ void printArraySzt(size_t *a, size_t sz,char *msg){
     }\
     return NULL;\
   }\
-*/  \
+  \
   tensor_##type * sub_copy_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim){\
     dimension *rdim= rootens->dim;\
     dimension *dS_t = sub_copy_minus_dim_tail(rdim,rdim->size - minuSubdim);\
@@ -273,6 +329,147 @@ void printArraySzt(size_t *a, size_t sz,char *msg){
     return NULL;\
   }\
   \
+void print_tensor_msg_##type(tensor_##type *T,char *msg) {\
+  size_t j=0,k=0;\
+  long int *coord = malloc(sizeof(long int)*(T->dim)->size); \
+  char *val=NULL;\
+  char *dimsg=malloc(512);\
+  sprintf(dimsg,"(%s)->dim",msg);\
+  printDebug_dimension(T->dim,dimsg);\
+  printf("%s\n",msg);\
+  long int begin , end, beginIter, endIter ;\
+  long int (*iter)(long int) ;\
+  bool (*cond)(long int, long int) ; \
+  if (endian ) {\
+        begin = (T->dim->size) - 1; end = 0;\
+        iter = decr; cond = isGreatEqThan; \
+  }else{\
+        begin = 0 ; end = (T->dim->size) - 1; \
+        iter = incr; cond = isLessEqThan; \
+  }\
+  for(long int i=0;i<(T->dim)->rank;++i){\
+    vCoordFromLin(coord,i,T->dim);\
+    if(coord[begin]==0){\
+      for(long int j=begin; cond(j,end); j= iter(j) ){\
+        if(coord[j]==0) printf("(");\
+        else break;\
+      }\
+    }\
+    printf(" [{");\
+    for(size_t k=0; k<(T->dim)->size;++k) printf(" %ld,",coord[k]);\
+    val=type##_TO_STR(T->x[i]);\
+    printf("}#%ld] %s, ",i,val);\
+    free(val); val=NULL;\
+    if(coord[begin]==(T->dim)->perm[begin]-1){\
+      for(long int j=begin; cond(j,end); j = iter(j)){\
+        if(coord[j]==(T->dim)->perm[j]-1) printf(")");\
+        else break;\
+      }\
+    }\
+  }\
+  \
+  free(coord);\
+  printf("\n");\
+  free(dimsg);\
+}\
+\
+size_t sprint_tensor_##type(char **tensorContent,tensor_##type *T, bool withIndex) {\
+  if(*tensorContent != NULL) {\
+    free(*tensorContent);\
+    *tensorContent = NULL;  \
+  }\
+  size_t sz = ((T->dim)->rank)*(32+ withIndex * 5*(T->dim)->size + 9 );\
+  printf("malloc %ld char\n",sz);\
+  *tensorContent = malloc(sz )  ;\
+  size_t cur=0;\
+  long int *coord = malloc(sizeof(long int)*(T->dim)->size); \
+  char *val=NULL;\
+  long int begin , end, beginIter, endIter ;\
+  long int (*iter)(long int) ;\
+  bool (*cond)(long int, long int) ; \
+  if (endian ) {\
+        begin = (T->dim->size) - 1; end = 0;\
+        iter = decr; cond = isGreatEqThan; \
+  }else{\
+        begin = 0 ; end = (T->dim->size) - 1; \
+        iter = incr; cond = isLessEqThan; \
+  }\
+  for(long int i=0;i<(T->dim)->rank;++i){\
+    vCoordFromLin(coord,i,T->dim);\
+    if(coord[begin]==0){\
+      for(long int j=begin; cond(j,end); j= iter(j) ){\
+        if(coord[j]==0) /*printf("(")*/(*tensorContent)[cur++]='(';\
+        else break;\
+      }\
+    }\
+  if(withIndex){\
+    (*tensorContent)[cur++]=' ';\
+   (*tensorContent)[cur++]='[';\
+    (*tensorContent)[cur++]='{';\
+    for(size_t k=0; k<(T->dim)->size;++k) {\
+      /*printf(" %ld,",coord[k]);*/\
+      val=TYPE_SIZE_T_TO_STR(coord[k]);\
+      for(size_t c=0;c<strlen(val);++c){\
+        (*tensorContent)[cur++]=' ';\
+        (*tensorContent)[cur++]=val[c];\
+      }\
+      free(val); val = NULL;\
+      (*tensorContent)[cur++]=',';\
+    }\
+    (*tensorContent)[cur++]='}';\
+    (*tensorContent)[cur++]='#';\
+       val=TYPE_SIZE_T_TO_STR(i);\
+    for(size_t c=0;c<strlen(val);++c)\
+      (*tensorContent)[cur++]=val[c];\
+    free(val); val = NULL;\
+    (*tensorContent)[cur++]=']';\
+    (*tensorContent)[cur++]=' ';\
+  }\
+    val=type##_TO_STR(T->x[i]);\
+    /*printf(" {%ld} %s [",i,val);*/\
+    (*tensorContent)[cur++]=' ';\
+    for(size_t c=0;c<strlen(val);++c)\
+      (*tensorContent)[cur++]=val[c];\
+    free(val); val = NULL;\
+    (*tensorContent)[cur++]=',';\
+    if(coord[begin]==(T->dim)->perm[begin]-1){\
+      for(long int j=begin; cond(j,end); j = iter(j)){\
+        if(coord[j]==(T->dim)->perm[j]-1) /*printf(")"); */ (*tensorContent)[cur++]=')';\
+        else break;\
+      }\
+    }\
+  }\
+  \
+  free(coord);\
+  /*printf("\n");*/(*tensorContent)[cur++]='\n';\
+  (*tensorContent)[cur++]='\0';\
+  return cur;\
+}\
+  \
+  \
+void split_tensor_##type(tensor_##type *Troot, tensor_##type **Tpart1, tensor_##type **Tpart2, size_t pivotSplit, size_t rangeInPivot){\
+  size_t sz = (Troot->dim)->size;\
+  if(pivotSplit < sz){\
+    if( rangeInPivot < (Troot->dim)->perm[pivotSplit]){\
+      dimension *dpart1, *dpart2;\
+      split_dim_part(Troot->dim, &dpart1, &dpart2, pivotSplit, rangeInPivot);\
+      *Tpart1 = init_tensor_head_##type(Troot, dpart1);\
+      *Tpart2 = init_tensor_tail_##type(Troot, dpart2);\
+    }\
+  }\
+}  \
+void split_copy_tensor_##type(tensor_##type *Troot, tensor_##type **Tpart1, tensor_##type **Tpart2, size_t pivotSplit, size_t rangeInPivot){\
+  size_t sz = (Troot->dim)->size;\
+  if(pivotSplit < sz){\
+    if( rangeInPivot < (Troot->dim)->perm[pivotSplit]){\
+      dimension *dpart1, *dpart2;\
+      split_dim_part(Troot->dim, &dpart1, &dpart2, pivotSplit, rangeInPivot);\
+      *Tpart1 = init_tensor_head_##type(Troot, dpart1);\
+      *Tpart2 = init_tensor_tail_##type(Troot, dpart2);\
+    }\
+  }\
+}\
+\
 void tensorProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1) {  \
   dimension *dd;  \
     add_dimension(&dd, M0->dim, M1->dim); \
diff --git a/tensor_t/src/tensor_t/tensor_t.h b/tensor_t/src/tensor_t/tensor_t.h
index 0e795a8..d7c741a 100644
--- a/tensor_t/src/tensor_t/tensor_t.h
+++ b/tensor_t/src/tensor_t/tensor_t.h
@@ -1,6 +1,8 @@
 #ifndef __TENSOR_T__H__
 #define __TENSOR_T__H__
 
+#include <stdlib.h>
+#include <time.h>
 #include <pthread.h>
 
 #include "dimension_t/dimension_t.h"
@@ -14,15 +16,19 @@ struct tensor_##type{\
 };\
 typedef struct tensor_##type tensor_##type;\
 tensor_##type * CREATE_TENSOR_##type(dimension *dim); \
+tensor_##type* CREATE_TENSOR_FROM_CPY_DIM_##type(dimension *dim);\
 void free_tensor_##type(tensor_##type *  tens); \
-/*tensor_##type * sub_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
+tensor_##type * sub_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
 tensor_##type * sub_minus_tensor_tail_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
 tensor_##type * sub_tensor_head_##type(tensor_##type *rootens, size_t subdim, size_t rankInDim); \
 tensor_##type * sub_tensor_tail_##type(tensor_##type *rootens, size_t subdim, size_t rankInDim); \
-*/tensor_##type * sub_copy_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
+tensor_##type * sub_copy_minus_tensor_head_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
 tensor_##type * sub_copy_minus_tensor_tail_##type(tensor_##type *rootens, size_t minuSubdim, size_t rankInDim); \
 tensor_##type * sub_copy_tensor_head_##type(tensor_##type *rootens, size_t sub_copydim, size_t rankInDim); \
 tensor_##type * sub_copy_tensor_tail_##type(tensor_##type *rootens, size_t sub_copydim, size_t rankInDim); \
+void print_tensor_msg_##type(tensor_##type *T, char *msg);\
+size_t sprint_tensor_##type(char **tensorContent,tensor_##type *T, bool withIndex);\
+void split_tensor_##type(tensor_##type *Troot, tensor_##type **Tpart1, tensor_##type **Tpart2, size_t pivotSplit, size_t rangeInPivot);\
 void tensorProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1); \
 void tensorProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1); \
 void tensorContractnProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber); \
@@ -31,6 +37,7 @@ void tensorProdThrea2d_##type(tensor_##type **MM, tensor_##type *M0, tensor_##ty
 void tensorContractnProdThread_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber, size_t nbthread); \
 void tensorContractnPro2dThread_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber, size_t nbthread); \
 void tensorContractnProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber); \
+void init_random_x_##type(tensor_##type *M, type minR, type maxR,  int randomRange);\
 
 
 GENERATE_TENSOR_TYPE(TYPE_FLOAT);
diff --git a/tensor_t/test/is_good.c b/tensor_t/test/is_good.c
index 96bb7ad..ac4cc20 100644
--- a/tensor_t/test/is_good.c
+++ b/tensor_t/test/is_good.c
@@ -17,7 +17,7 @@
 //#include "permutation_t/permutation_t.h"
 #include "tensor_t/tensor_t.h"
 
-#define VALGRIND_ 0
+#define VALGRIND_ 1
 
 TEST(rank){
   endian =true;
@@ -42,9 +42,10 @@ void print_tensor_float(tensor_TYPE_FLOAT *M, char *msg){
   LOG("================= %s ===============\n",msg);
 
 #if VALGRIND_
-  for(size_t i=0; i<M->dim->rank;++i)
+  /*for(size_t i=0; i<M->dim->rank;++i)
       LOG("[%ld]: %f ",i,M->x[i]);
-  
+  */
+  print_tensor_msg_TYPE_FLOAT(M,msg);
 #endif
     LOG("%s","\n");
 }
@@ -53,9 +54,11 @@ void print_tensor_float(tensor_TYPE_FLOAT *M, char *msg){
 void print_tensor_double(tensor_TYPE_DOUBLE *M, char *msg){
   LOG("================= %s ===============\n",msg);
 #if VALGRIND_
+  /*
   for(size_t i=0; i<M->dim->rank;++i)
       LOG("[%ld]: %lf ",i,M->x[i]);
-  
+  */
+  print_tensor_msg_TYPE_DOUBLE(M,msg);
 #endif
     LOG("%s","\n");
 }
@@ -260,6 +263,201 @@ TEST(tensorSubtail ){
   free_tensor_TYPE_FLOAT(s2t);
 }
 
+TEST(randomInit){
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=4;
+  d0->perm[1]=3;
+  d0->perm[2]=5;
+  
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_FLOAT *M0 = CREATE_TENSOR_TYPE_FLOAT(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  init_random_x_TYPE_FLOAT(M0,2.7,5.4,50001);
+
+  print_tensor_float(M0, "M0 random");
+  free_tensor_TYPE_FLOAT(M0);
+}
+TEST(printT_init_false){
+  endian=false;
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=2;
+  d0->perm[1]=3;
+  d0->perm[2]=4;
+  
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_FLOAT *M0 = CREATE_TENSOR_TYPE_FLOAT(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  //init_random_x_TYPE_FLOAT(M0,2,5,50);
+  for(size_t i=0; i<M0->dim->rank;++i) M0->x[i]=i*0.1 +1;
+
+
+//  print_tensor_float(M0, "M0 ");
+  print_tensor_msg_TYPE_FLOAT(M0, "M0 ");
+  free_tensor_TYPE_FLOAT(M0);
+  
+}
+
+
+TEST(printT_Init_true){
+  endian=true;
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=2;
+  d0->perm[1]=3;
+  d0->perm[2]=4;
+  
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_FLOAT *M0 = CREATE_TENSOR_TYPE_FLOAT(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  //init_random_x_TYPE_FLOAT(M0,2,5,50);
+  for(size_t i=0; i<M0->dim->rank;++i) M0->x[i]=i*0.1 +1;
+
+
+//  print_tensor_float(M0, "M0 ");
+  print_tensor_msg_TYPE_FLOAT(M0, "M0 ");
+  free_tensor_TYPE_FLOAT(M0);
+  
+}
+
+TEST(sprinttens){
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=4;
+  d0->perm[1]=3;
+  d0->perm[2]=2;
+
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_DOUBLE *M0 = CREATE_TENSOR_TYPE_DOUBLE(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  init_random_x_TYPE_DOUBLE(M0,2.7,5.4,50001);
+
+  //print_tensor_double(M0, "test print M0");
+  char *tensCont = NULL;
+  size_t nbChar = sprint_tensor_TYPE_DOUBLE(&tensCont, M0, false);
+
+  LOG(" avec Sprint_tensor sans index, M0 est : \n%s \n, il y a %ld charactères\n",tensCont, nbChar);
+  
+  nbChar = sprint_tensor_TYPE_DOUBLE(&tensCont, M0, true);
+
+  LOG(" avec Sprint_tensor avec index, M0 est : \n%s \n, il y a %ld charactères\n",tensCont, nbChar);
+
+  endian=false;
+ 
+  nbChar = sprint_tensor_TYPE_DOUBLE(&tensCont, M0, true);
+
+  LOG(" avec Sprint_tensor avec index et endian=false, M0 est : \n%s \n, il y a %ld charactères\n",tensCont, nbChar);
+
+
+  free(tensCont);
+  free_tensor_TYPE_DOUBLE(M0);
+}
+
+
+#if 1
+
+TEST(Split_randomInit){
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=4;
+  d0->perm[1]=3;
+  d0->perm[2]=5;
+  
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_FLOAT *M0 = CREATE_TENSOR_TYPE_FLOAT(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  init_random_x_TYPE_FLOAT(M0,2.7,5.4,50001);
+
+  print_tensor_float(M0, "M0 random");
+  print_tensor_msg_TYPE_FLOAT(M0, "M0 random");
+
+  tensor_TYPE_FLOAT *Tpart1=NULL, *Tpart2=NULL;
+
+  split_tensor_TYPE_FLOAT(M0,&Tpart1,&Tpart2, 1, 2);
+
+  print_tensor_float(Tpart1, " Tpart1 1");
+  print_tensor_msg_TYPE_FLOAT(Tpart1, " Tpart1 1");
+  print_tensor_float(Tpart2, "Tpart2 ..");
+  print_tensor_msg_TYPE_FLOAT(Tpart2, "Tpart2 ..");
+
+  printDebug_dimension(Tpart1->dim,"dim part1 "); 
+  printDebug_dimension(Tpart2->dim,"dim part2 "); 
+  printDebug_dimension(M0->dim,"dim root "); 
+
+  free_tensor_TYPE_FLOAT(M0);
+  free(Tpart1->dim);
+  free(Tpart2->dim);
+  free(Tpart1);
+  free(Tpart2);
+}
+#endif
+
+#if 1
+
+TEST(Split_randomInit){
+  dimension *d0=create_dim(3);
+
+  d0->perm[0]=4;
+  d0->perm[1]=3;
+  d0->perm[2]=5;
+  
+
+  updateRankDim(d0);
+
+
+  tensor_TYPE_FLOAT *M0 = CREATE_TENSOR_TYPE_FLOAT(d0);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+
+  init_random_x_TYPE_FLOAT(M0,2.7,5.4,50001);
+
+  print_tensor_float(M0, "M0 random");
+
+  tensor_TYPE_FLOAT *Tpart1=NULL, *Tpart2=NULL;
+
+  split_tensor_TYPE_FLOAT(M0,&Tpart1,&Tpart2, 2, 1);
+
+  print_tensor_float(Tpart1, " Tpart1 1");
+  print_tensor_float(Tpart2, "Tpart2 ..");
+
+  printDebug_dimension(Tpart1->dim,"dim part1 "); 
+  printDebug_dimension(Tpart2->dim,"dim part2 "); 
+  printDebug_dimension(M0->dim,"dim root "); 
+
+  free_tensor_TYPE_FLOAT(M0);
+  free(Tpart1->dim);
+  free(Tpart2->dim);
+  free(Tpart1);
+  free(Tpart2);
+}
+#endif
+
 TEST(tensorProd ){
   dimension *d0=create_dim(3);
   dimension *d1=create_dim(2);
@@ -620,6 +818,70 @@ TEST(Pthread_tensorContractnPro2d_TYPE_DOUBLE2 ){
   free_tensor_TYPE_DOUBLE(M1);
 
 }
+TEST(contract_dim1){
+  dimension *d0=create_dim(3);
+  dimension *d1=create_dim(1);
+#if VALGRIND_
+  d0->perm[0]=5;
+  d0->perm[1]=2; //3;
+  d0->perm[2]=3;
+
+  d1->perm[0]=3;
+
+#else
+
+  d0->perm[0]=125;
+  d0->perm[1]=52; //3;
+  d0->perm[2]=63;
+
+  d1->perm[0]=63;
+#endif
+
+
+  updateRankDim(d0);
+  updateRankDim(d1);
+
+
+  tensor_TYPE_DOUBLE *M0 = CREATE_TENSOR_TYPE_DOUBLE(d0);
+  tensor_TYPE_DOUBLE *M1 = CREATE_TENSOR_TYPE_DOUBLE(d1);
+
+  LOG("M0->dim->rank = %ld\n",M0->dim->rank);
+  LOG("M1->dim->rank = %ld\n",M1->dim->rank);
+  for(size_t i=0; i<M0->dim->rank;++i) M0->x[i]=i*0.1 +1;
+  for(size_t i=0; i<M1->dim->rank;++i) M1->x[i]=i*0.003 + 2;
+
+  print_tensor_double(M0,"M0");
+  print_tensor_double(M1,"M1");
+
+  tensor_TYPE_DOUBLE *M;
+  tensor_TYPE_DOUBLE *MnO;
+
+  size_t nbthread = 5;
+
+  tensorContractnProd_TYPE_DOUBLE(&M, M0,M1,1);
+  //print_tensor_double(M,"M");
+  //cl_tensorContractnProd_TYPE_DOUBLE(&MnO, M0,M1,1);
+  tensorContractnProdThread_TYPE_DOUBLE(&MnO, M0,M1,1,nbthread);
+
+  print_tensor_double(MnO,"MnO");
+
+printDebug_dimension(M0->dim," M0 dimension  ");
+printDebug_dimension(M1->dim," M1 dimension  ");
+printDebug_dimension(M->dim," M dimension  ");
+
+
+  // for(size_t i=0;i<M->dim->rank;++i)
+  //    EXPECT_EQ_TYPE_DOUBLE(M->x[i],MnO->x[i]);
+    
+  EXPECT_ARRAY_EQ_TYPE_DOUBLE(M->x,M->dim->rank,MnO->x,MnO->dim->rank);
+
+  free_tensor_TYPE_DOUBLE(M);
+  free_tensor_TYPE_DOUBLE(MnO);
+  free_tensor_TYPE_DOUBLE(M0);
+  free_tensor_TYPE_DOUBLE(M1);
+
+}
+
 TEST(Pthread_tensorContractnProd_TYPE_DOUBLE2 ){
   dimension *d0=create_dim(3);
   dimension *d1=create_dim(3);