namespace-wrap the generator function block

* the purpose is to subdivide the global scope
* use 'fortuna' as the top-level namespace
* use 'generator' namespace for the generator functions
* wrap the entire file after includes

generator.cpp

@@ -5,6 +5,9 @@
 #include <tuple>
 #include "generator.h"
 
+namespace fortuna {
+namespace generator {
+
 using namespace std;
 
 struct G_state{
@@ -78,3 +81,6 @@ auto generate_random_data(G_state G, uint n) -> tuple<string, G_state> {
 	return {r, G};
 };
 
+} // namespace generator
+} // namespace fortuna
+

generator.h

@@ -5,6 +5,9 @@
 #include <cstring>
 #include <tuple>
 
+namespace fortuna {
+namespace generator {
+
 struct G_state;
 
 /* initializes generator */
@@ -21,4 +24,6 @@ auto generate_blocks(G_state G, int k_blocks) -> std::tuple<std::string, G_state
 /* returns output of 0 <= n <= 2^20 bytes */
 auto generate_random_data(G_state G, int n) -> std::tuple<std::string, G_state>;
 
+} //namespace generator
+} //namespace fortuna
 #endif//FORTUNA_GENERATOR_H