From 1106e1e6358367296e3b820af5d40888c14b4254 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Micha=C3=ABl=20Celerier?=
 <jeanmichael.celerier@gmail.com>
Date: Thu, 14 Sep 2023 08:44:03 -0400
Subject: [PATCH] [cross] Add fix in case from_chars(double) is not there

---
 include/avnd/binding/max/from_atoms.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/avnd/binding/max/from_atoms.hpp b/include/avnd/binding/max/from_atoms.hpp
index ccca8057..8791d327 100644
--- a/include/avnd/binding/max/from_atoms.hpp
+++ b/include/avnd/binding/max/from_atoms.hpp
@@ -2,7 +2,11 @@
 
 #include <avnd/common/concepts_polyfill.hpp>
 #include <avnd/common/aggregates.hpp>
+#if !defined(__cpp_lib_to_chars)
+#include <boost/lexical_cast.hpp>
+#else
 #include <charconv>
+#endif
 #include <string>
 #include <ext.h>
 
@@ -35,12 +39,20 @@ struct from_atom
         if(sym && sym->s_name)
         {
           double vv{};
+          #if defined(__cpp_lib_to_chars)
           auto [_, ec] = std::from_chars(sym->s_name, sym->s_name + strlen(sym->s_name), vv);
           if(ec == std::errc{})
           {
             v = vv;
             return true;
           }
+          #else
+          if(boost::conversion::try_lexical_convert(str, vv))
+          {
+            v = vv;
+            return true;
+          }
+          #endif
         }
         return false;
       }