From a7b5ed79afe56322dbd17288abba8e19f41c51a3 Mon Sep 17 00:00:00 2001
From: John Wellbelove <github@wellbelove.co.uk>
Date: Sun, 4 Apr 2021 12:16:54 +0100
Subject: [PATCH] Added etl::histogram and etl::sparce_histogram

---
 include/etl/histogram.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/etl/histogram.h b/include/etl/histogram.h
index 9d27288a..d314a0e2 100644
--- a/include/etl/histogram.h
+++ b/include/etl/histogram.h
@@ -20,6 +20,7 @@ namespace etl
   public:
 
     ETL_STATIC_ASSERT(etl::is_integral<TKey>::value, "Only integral keys allowed");
+    ETL_STATIC_ASSERT(etl::is_integral<TCount>::value, "Only integral count allowed");
 
     static ETL_CONSTANT size_t Max_Size = Max_Keys;
 
@@ -210,6 +211,7 @@ namespace etl
   public:
 
     ETL_STATIC_ASSERT(etl::is_integral<TKey>::value, "Only integral keys allowed");
+    ETL_STATIC_ASSERT(etl::is_integral<TCount>::value, "Only integral count allowed");
 
     static ETL_CONSTANT size_t Max_Size = Max_Keys;
 
@@ -405,6 +407,8 @@ namespace etl
 
   public:
 
+    ETL_STATIC_ASSERT(etl::is_integral<TCount>::value, "Only integral count allowed");
+
     static ETL_CONSTANT size_t Max_Size = Max_Keys;
 
     typedef TKey   key_type;