From 14f0d38cac7068496f45c8d1b0b61f8c795dfcff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=80=90=E9=9B=81=E5=8D=97=E9=A3=9B?= <zynfly@9z.work>
Date: Thu, 1 Jul 2021 13:59:00 +0800
Subject: [PATCH] Fixed an issue with round (#207)

* Fix the problem that the result has a decimal point when the round function, when the precision is 0.

* fix tests/test-functions.cpp:91 for round check
---
 include/inja/renderer.hpp    | 6 +++++-
 single_include/inja/inja.hpp | 6 +++++-
 test/test-functions.cpp      | 2 +-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/include/inja/renderer.hpp b/include/inja/renderer.hpp
index ef951b99..e299db58 100644
--- a/include/inja/renderer.hpp
+++ b/include/inja/renderer.hpp
@@ -439,7 +439,11 @@ class Renderer : public NodeVisitor  {
       const auto args = get_arguments<2>(node);
       const int precision = args[1]->get<int>();
       const double result = std::round(args[0]->get<double>() * std::pow(10.0, precision)) / std::pow(10.0, precision);
-      result_ptr = std::make_shared<json>(std::move(result));
+      if(0==precision){
+        result_ptr = std::make_shared<json>(int(result));
+      }else{
+        result_ptr = std::make_shared<json>(std::move(result));
+      }
       json_tmp_stack.push_back(result_ptr);
       json_eval_stack.push(result_ptr.get());
     } break;
diff --git a/single_include/inja/inja.hpp b/single_include/inja/inja.hpp
index 03e19a06..509f5e7f 100644
--- a/single_include/inja/inja.hpp
+++ b/single_include/inja/inja.hpp
@@ -3935,7 +3935,11 @@ class Renderer : public NodeVisitor  {
       const auto args = get_arguments<2>(node);
       const int precision = args[1]->get<int>();
       const double result = std::round(args[0]->get<double>() * std::pow(10.0, precision)) / std::pow(10.0, precision);
-      result_ptr = std::make_shared<json>(std::move(result));
+      if(0==precision){
+        result_ptr = std::make_shared<json>(int(result));
+      }else{
+        result_ptr = std::make_shared<json>(std::move(result));
+      }
       json_tmp_stack.push_back(result_ptr);
       json_eval_stack.push(result_ptr.get());
     } break;
diff --git a/test/test-functions.cpp b/test/test-functions.cpp
index 4ec4c25b..dab8e9b5 100644
--- a/test/test-functions.cpp
+++ b/test/test-functions.cpp
@@ -88,7 +88,7 @@ TEST_CASE("functions") {
   }
 
   SUBCASE("round") {
-    CHECK(env.render("{{ round(4, 0) }}", data) == "4.0");
+    CHECK(env.render("{{ round(4, 0) }}", data) == "4");
     CHECK(env.render("{{ round(temperature, 2) }}", data) == "25.68");
     // CHECK_THROWS_WITH( env.render("{{ round(name, 2) }}", data), "[inja.exception.json_error]
     // [json.exception.type_error.302] type must be number, but is string" );