Changed to avoid compiler error in visual studio 2005

dlib/lsh/create_random_projection_hash.h

@@ -75,7 +75,7 @@ namespace dlib
         // figure out what the offset values should be
         for (int itr = 0; itr < offset.size(); ++itr)
         {
-            counts.assign(std::pow(2,bits), 0);
+            counts.assign(std::pow(2.0,bits), 0);
             // count the popularity of each hash value
             for (unsigned long i = 0; i < h.size(); ++i)
             {

dlib/lsh/projection_hash.h

@@ -44,7 +44,7 @@ namespace dlib
         unsigned long num_hash_bins (
         ) const
         {
-            return static_cast<unsigned long>(std::pow(2, offset.size()));
+            return static_cast<unsigned long>(std::pow(2.0, offset.size()));
         }
 
         template <typename EXP>