From 79dd4a2cb6a14890036f259506f9d648ad3f264d Mon Sep 17 00:00:00 2001
From: Andrew Johnson <andrew.johnson@arjohnsonau.com>
Date: Sun, 14 Jul 2024 16:10:25 +0300
Subject: [PATCH] Use explicit std namespace for hypot call

---
 stan/math/prim/fun/fabs.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stan/math/prim/fun/fabs.hpp b/stan/math/prim/fun/fabs.hpp
index 193e154b736..71a1d521656 100644
--- a/stan/math/prim/fun/fabs.hpp
+++ b/stan/math/prim/fun/fabs.hpp
@@ -17,7 +17,7 @@ inline auto fabs(T x) {
 
 template <typename T, require_complex_t<T>* = nullptr>
 inline auto fabs(T x) {
-  return hypot(x.real(), x.imag());
+  return std::hypot(x.real(), x.imag());
 }
 
 /**