From 57919cea2097909b772fb79bb2bc64260aec37d7 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Tue, 21 Feb 2023 10:33:06 -0800
Subject: [PATCH] Change x86 intrinsic to work with 32bit environment

---
 include/boost/charconv/detail/leading_zeros.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/charconv/detail/leading_zeros.hpp b/include/boost/charconv/detail/leading_zeros.hpp
index c928fee..c56ed90 100644
--- a/include/boost/charconv/detail/leading_zeros.hpp
+++ b/include/boost/charconv/detail/leading_zeros.hpp
@@ -76,7 +76,7 @@ inline int leading_zeros(std::uint64_t val) noexcept
         return static_cast<int>(63 - leading_zero);
     }
 #elif defined(BOOST_CHARCONV_HAS_X86_INTRINSICS)
-    return static_cast<int>(_lzcnt_u64(val);)
+    return static_cast<int>(__builtin_clzll(val));
 #elif defined(BOOST_CHARCONV_HAS_ARM_INTRINSICS)
     // CLZ Xd, Xm
     return __builtin_clzll(val);