From 057bfbecba69d112318dea522d395c87967a9432 Mon Sep 17 00:00:00 2001
From: Loic Gouarin <loic.gouarin@gmail.com>
Date: Thu, 6 Feb 2025 10:03:20 +0100
Subject: [PATCH] fix: add make_field_function (#266)

## Description
The `make_field_function` was removed in a previous version, but it is
used in external projects. This PR simply adds it back.

## Code of Conduct
By submitting this PR, you agree to follow our [Code of
Conduct](https://github.com/hpc-maths/samurai/blob/master/docs/CODE_OF_CONDUCT.md)
- [x] I agree to follow this project's Code of Conduct
---
 include/samurai/field_expression.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/samurai/field_expression.hpp b/include/samurai/field_expression.hpp
index c25c4b2ae..42db200ed 100644
--- a/include/samurai/field_expression.hpp
+++ b/include/samurai/field_expression.hpp
@@ -122,6 +122,13 @@ namespace samurai
         , m_f(std::forward<Func>(f))
     {
     }
+
+    template <class F, class... E>
+    inline auto make_field_function(E&&... e) noexcept
+    {
+        using type = field_function<F, E...>;
+        return type(F(), std::forward<E>(e)...);
+    }
 } // namespace samurai
 
 namespace xt::detail