test for random [sic] utility methods

[blank.git] / src / rand / GaloisLFSR.hpp

diff --git a/src/rand/GaloisLFSR.hpp b/src/rand/GaloisLFSR.hpp
index f5de7ad0bb650f15d9d6870d82e3bd6f3ee97b70..001173919c1214a6b0931e788f2130c6bdac312f 100644 (file)
--- a/src/rand/GaloisLFSR.hpp
+++ b/src/rand/GaloisLFSR.hpp
@@ -42,6 +42,11 @@ public:
                return out = static_cast<T>(state);
        }
 
+       /// special case for randrom(boolean), since static_cast<bool>(0b10) == true
+       bool operator ()(bool &out) noexcept {
+               return out = operator ()();
+       }
+
        template<class T>
        T Next() noexcept {
                T next;
@@ -58,10 +63,12 @@ public:
 
        template<class Container>
        typename Container::reference From(Container &c) {
+               assert(c.size() > 0);
                return c[Next<typename Container::size_type>() % c.size()];
        }
        template<class Container>
        typename Container::const_reference From(const Container &c) {
+               assert(c.size() > 0);
                return c[Next<typename Container::size_type>() % c.size()];
        }