UniforFill with integer values.

library/include/ck/library/utility/fill.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <algorithm>
+#include <cmath>
 #include <random>
 
 #include "data_type.hpp"
@@ -8,35 +9,10 @@
 namespace ck {
 namespace utils {
 
-// template <typename T, class Enable = void>
-// struct FillUniform;
-
-// TODO: what's wrong with this specialization???
-// err: segmentation fault in mt19937 - infinite loop like.
-// template <typename T>
-// struct FillUniform<T, typename std::enable_if<std::is_integral<T>::value &&
-//                                               !std::is_same<T, bhalf_t>::value>::type>
-// {
-//     int a_{0};
-//     int b_{5};
-//     // T a_ = T{0};
-//     // T b_ = T{5};
-
-//     template <typename ForwardIter>
-//     void operator()(ForwardIter first, ForwardIter last) const
-//     {
-//         std::mt19937 gen{11939};
-//         std::uniform_int_distribution<int> dis(a_, b_);
-//         std::generate(first, last, [&dis, &gen]() { return ck::type_convert<T>(dis(gen)); });
-//     }
-// };
-
-// struct FillUniform<T, typename std::enable_if<std::is_floating_point<T>::value ||
-//                                               std::is_same<T, bhalf_t>::value>::type>
 template <typename T>
 struct FillUniform
 {
-    float a_{0};
+    float a_{-5};
     float b_{5};
 
     template <typename ForwardIter>
@@ -48,6 +24,22 @@ struct FillUniform
     }
 };
 
+template <typename T>
+struct FillUniformIntegerValue
+{
+    float a_{-5};
+    float b_{5};
+
+    template <typename ForwardIter>
+    void operator()(ForwardIter first, ForwardIter last) const
+    {
+        std::mt19937 gen{11939};
+        std::uniform_real_distribution<> dis(a_, b_);
+        std::generate(
+            first, last, [&dis, &gen]() { return ck::type_convert<T>(std::round(dis(gen))); });
+    }
+};
+
 template <typename T>
 struct FillMonotonicSeq
 {