implementing some new functionality to bitvecotr

la_random.h

@@ -1,11 +1,14 @@
 #ifndef _LA_RANDOM_H
 #define _LA_RANDOM_H
 
+#include <stdint.h>
+
 namespace LA {
 
 extern double randdouble();
 extern double randdoublesigned();
 extern int randint32();
+extern uint64_t randint64();
 
 //RANDOM numbers defaulting to standard library but switchable to user's functions
 #ifndef RANDDOUBLE
@@ -20,6 +23,11 @@ extern int randint32();
 #define RANDINT32 LA::randint32
 #endif
 
+#ifndef RANDINT64
+#define RANDINT64 LA::randint64
+#endif
+
+
 #ifdef __GNUC__
 #define WEAK_SYMBOL __attribute__((weak)) 
 #else