From 2f323247cc8d9f2e1951a313b50e875941dd1446 Mon Sep 17 00:00:00 2001
From: Marshall Clow <mclow.lists@gmail.com>
Date: Tue, 7 May 2019 16:07:24 +0000
Subject: [PATCH] Mark private function __sign as constexpr.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@360167 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/numeric | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/numeric b/include/numeric
index 6be60801b..4b0861129 100644
--- a/include/numeric
+++ b/include/numeric
@@ -556,7 +556,7 @@ midpoint(_TPtr __a, _TPtr __b) noexcept
 
 
 template <typename _Tp>
-int __sign(_Tp __val) {
+constexpr int __sign(_Tp __val) {
     return (_Tp(0) < __val) - (__val < _Tp(0));
 }