From e267ba87f0fc24fa7ef9126c5a753b0afb45f7ef Mon Sep 17 00:00:00 2001
From: Andrey Mironov <hertz@yandex-team.ru>
Date: Fri, 3 Apr 2015 17:52:33 +0300
Subject: [PATCH] dbms: rename isNan to isNaN [#METR-15731]

---
 .../DB/Functions/FunctionsMiscellaneous.h     |  6 +++---
 dbms/src/Functions/FunctionsMiscellaneous.cpp |  2 +-
 .../00143_number_classification_functions.sql | 20 +++++++++----------
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/dbms/include/DB/Functions/FunctionsMiscellaneous.h b/dbms/include/DB/Functions/FunctionsMiscellaneous.h
index 789116733f4..65cd2f19577 100644
--- a/dbms/include/DB/Functions/FunctionsMiscellaneous.h
+++ b/dbms/include/DB/Functions/FunctionsMiscellaneous.h
@@ -874,14 +874,14 @@ struct IsInfiniteImpl
 	template <typename T> static bool execute(const T t) { return std::isinf(t); }
 };
 
-struct IsNanImpl
+struct IsNaNImpl
 {
-	static constexpr auto name = "isNan";
+	static constexpr auto name = "isNaN";
 	template <typename T> static bool execute(const T t) { return std::isnan(t); }
 };
 
 using FunctionIsFinite = FunctionNumericPredicate<IsFiniteImpl>;
 using FunctionIsInfinite = FunctionNumericPredicate<IsInfiniteImpl>;
-using FunctionIsNan = FunctionNumericPredicate<IsNanImpl>;
+using FunctionIsNaN = FunctionNumericPredicate<IsNaNImpl>;
 
 }
diff --git a/dbms/src/Functions/FunctionsMiscellaneous.cpp b/dbms/src/Functions/FunctionsMiscellaneous.cpp
index 5d2dc669171..7eaf498d8fb 100644
--- a/dbms/src/Functions/FunctionsMiscellaneous.cpp
+++ b/dbms/src/Functions/FunctionsMiscellaneous.cpp
@@ -336,7 +336,7 @@ void registerFunctionsMiscellaneous(FunctionFactory & factory)
 
 	factory.registerFunction<FunctionIsFinite>();
 	factory.registerFunction<FunctionIsInfinite>();
-	factory.registerFunction<FunctionIsNan>();
+	factory.registerFunction<FunctionIsNaN>();
 }
 
 }
diff --git a/dbms/tests/queries/0_stateless/00143_number_classification_functions.sql b/dbms/tests/queries/0_stateless/00143_number_classification_functions.sql
index 8f37d518f7d..feb59c5f227 100644
--- a/dbms/tests/queries/0_stateless/00143_number_classification_functions.sql
+++ b/dbms/tests/queries/0_stateless/00143_number_classification_functions.sql
@@ -21,13 +21,13 @@ select isInfinite(-inf) = 1;
 select isInfinite(nan) = 0;
 
 
-select isNan(0) = 0;
-select isNan(1) = 0;
-select isNan(materialize(0)) = 0;
-select isNan(materialize(1)) = 0;
-select isNan(1/0) = 0;
-select isNan(-1/0) = 0;
-select isNan(0/0) = 1;
-select isNan(inf) = 0;
-select isNan(-inf) = 0;
-select isNan(nan) = 1;
+select isNaN(0) = 0;
+select isNaN(1) = 0;
+select isNaN(materialize(0)) = 0;
+select isNaN(materialize(1)) = 0;
+select isNaN(1/0) = 0;
+select isNaN(-1/0) = 0;
+select isNaN(0/0) = 1;
+select isNaN(inf) = 0;
+select isNaN(-inf) = 0;
+select isNaN(nan) = 1;