diff --git a/catima.pyx b/catima.pyx
index 32fde78..72a79c5 100644
--- a/catima.pyx
+++ b/catima.pyx
@@ -338,7 +338,7 @@ cdef catimac.Material get_cmaterial(Material material):
     res = material.cbase
     return res
 
-def range(Projectile projectile, Material material, energy = None, Config config = default_config):  
+def projectile_range(Projectile projectile, Material material, energy = None, Config config = default_config):  
     if(isinstance(energy,numpy.ndarray)):
         res = numpy.empty(energy.size)
         for i,e in enumerate(energy):
@@ -403,3 +403,20 @@ def z_effective(Projectile p, Target t, Config c = default_config):
 
 def z_eff_Pierce_Blann(double z, double beta):
     return catimac.z_eff_Pierce_Blann(z,beta)
+
+
+def get_data(Projectile projectile, Material material, Config config = default_config):
+    data = catimac.get_data(projectile.cbase, material.cbase, config.cbase)
+    return [data.range,data.range_straggling,data.angular_variance]
+
+max_datapoints = catimac.max_datapoints
+
+def energy_table(unsigned int i):
+    if(i<catimac.energy_table.num):
+        return catimac.energy_table(i)
+    else:
+        return -1.0
+
+def get_energy_table():
+    r = [catimac.energy_table(x) for x in range(catimac.energy_table.num)]
+    return r
diff --git a/catimac.pxd b/catimac.pxd
index bfd6c34..2e916f6 100644
--- a/catimac.pxd
+++ b/catimac.pxd
@@ -86,9 +86,25 @@ cdef extern from "catima/calculations.h" namespace "catima":
     cdef double z_eff_Pierce_Blann(double z, double beta);
 
 cdef extern from "catima/constants.h" namespace "catima":        
-    cdef int max_datapoints;
+    int max_datapoints "catima::max_datapoints"
+    int logEmin "catima::logEmin"
+    int logEmax "catima::logEmax"
     
 cdef extern from "catima/storage.h" namespace "catima":
     cdef cppclass Interpolator:
+        Interpolator(const double *x, const double *y, int num) except +
         double eval(double)
         double derivative(double)
+        
+    cdef cppclass DataPoint:
+        vector[double] range
+        vector[double] range_straggling
+        vector[double] angular_variance
+    
+    cdef cppclass EnergyTableType "catima::EnergyTable[max_datapoints]":
+        size_t num;
+        double operator()(int i)
+        
+        
+    cdef EnergyTableType energy_table;        
+    cdef DataPoint& get_data(const Projectile &p, const Material &t, Config c);
diff --git a/tests/test.py b/tests/test.py
index 6b8ccd2..e42b6df 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -2,6 +2,7 @@ import sys
 sys.path.insert(0,"../build")
 import unittest
 import catima
+import math
 
 class TestStructures(unittest.TestCase):
 
@@ -152,6 +153,11 @@ class TestStructures(unittest.TestCase):
         res = catima.calculate(p(9),water)
         res = catima.calculate(p(9),water)
         self.assertAlmostEqual(res.dEdxi,51.17,1)
+        
+        p(900000)
+        res = catima.calculate(p,water)
+        res2 = catima.dedx_from_range(p,water)
+        self.assertAlmostEqual(res.dEdxi,res2,3)
     
     def test_eout(self):
         graphite = catima.get_material(6)
@@ -188,6 +194,51 @@ class TestStructures(unittest.TestCase):
         self.assertAlmostEqual(res[1]["sigma_a"],0.000774,4)
         self.assertAlmostEqual(res[0]["range"],107.1,0)
         self.assertAlmostEqual(res[1]["range"],110.7,0)
+    
+    def test_energy_table(self):
+        table = catima.get_energy_table()
+        self.assertEqual(table[0],catima.energy_table(0))
+        self.assertEqual(table[10],catima.energy_table(10))
+        self.assertEqual(len(table),catima.max_datapoints)
+        
+    def test_storage(self):
+        p = catima.Projectile(12,6)
+        water = catima.get_material(catima.material.WATER)
+        water.thickness(10.0)
+        graphite = catima.get_material(6)
+        graphite.thickness(1.0)
+        
+        data = catima.get_data(p, water)
+        print(data[1])
+        et = catima.get_energy_table()
+        
+        self.assertEqual(len(data),3)
+        self.assertEqual(len(data[0]),len(et))
+        
+        res = catima.calculate(p(et[10]),water)
+        self.assertAlmostEqual(res.range,data[0][10],6)
+        self.assertAlmostEqual(catima.projectile_range(p,water),data[0][10],6)
+        self.assertAlmostEqual(catima.domega2de(p,water),data[1][10],6)
+        
+        res = catima.calculate(p(et[100]),water)
+        self.assertAlmostEqual(res.range,data[0][100],6)
+        self.assertAlmostEqual(catima.projectile_range(p,water),data[0][100],6)
+        self.assertAlmostEqual(catima.domega2de(p,water),data[1][100],6)
+        
+        res = catima.calculate(p(et[200]),water)
+        self.assertAlmostEqual(res.range,data[0][200],6)
+        self.assertAlmostEqual(catima.projectile_range(p,water),data[0][200],6)
+        self.assertAlmostEqual(catima.domega2de(p,water),data[1][200],6)
+        
+        res = catima.calculate(p(et[401]),water)
+        self.assertAlmostEqual(res.range,data[0][401],6)
+        self.assertAlmostEqual(catima.projectile_range(p,water),data[0][401],6)
+        self.assertAlmostEqual(catima.domega2de(p,water),data[1][401],6)
+        
+        
+        
+        #self.assertAlmostEqual(catima.da2de(p,water,et[100]),data[2][100],6)
+        #self.assertAlmostEqual(catima.da2de(p,water,et[400]),data[2][400],6)
 
 if __name__ == "__main__":
-    unittest.main()
\ No newline at end of file
+    unittest.main()