From d8a20f9bd15dd270782ef6aa048c35e2d8748c04 Mon Sep 17 00:00:00 2001
From: sabiwara <sabiwara@gmail.com>
Date: Tue, 31 Oct 2023 08:38:47 +0900
Subject: [PATCH 1/2] Use :erlang.float_to_binary/2 in Float.to_string/1

---
 lib/elixir/lib/float.ex        | 2 +-
 lib/elixir/lib/string/chars.ex | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/elixir/lib/float.ex b/lib/elixir/lib/float.ex
index 22973c02230..ccefda986e5 100644
--- a/lib/elixir/lib/float.ex
+++ b/lib/elixir/lib/float.ex
@@ -603,7 +603,7 @@ defmodule Float do
   """
   @spec to_string(float) :: String.t()
   def to_string(float) when is_float(float) do
-    IO.iodata_to_binary(:io_lib_format.fwrite_g(float))
+    :erlang.float_to_binary(float, [:short])
   end
 
   @doc false
diff --git a/lib/elixir/lib/string/chars.ex b/lib/elixir/lib/string/chars.ex
index af6eabf45dd..272ed227c64 100644
--- a/lib/elixir/lib/string/chars.ex
+++ b/lib/elixir/lib/string/chars.ex
@@ -57,6 +57,6 @@ end
 
 defimpl String.Chars, for: Float do
   def to_string(term) do
-    IO.iodata_to_binary(:io_lib_format.fwrite_g(term))
+    :erlang.float_to_binary(term, [:short])
   end
 end

From ced0c3d87f4eca5f35fdd09469a8a7b60580991d Mon Sep 17 00:00:00 2001
From: sabiwara <sabiwara@gmail.com>
Date: Wed, 1 Nov 2023 00:33:19 +0900
Subject: [PATCH 2/2] Use :erlang.float_to_list/2 in Float.to_charlist/1

---
 lib/elixir/lib/float.ex      | 2 +-
 lib/elixir/lib/inspect.ex    | 2 +-
 lib/elixir/lib/list/chars.ex | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/elixir/lib/float.ex b/lib/elixir/lib/float.ex
index ccefda986e5..87aebdba113 100644
--- a/lib/elixir/lib/float.ex
+++ b/lib/elixir/lib/float.ex
@@ -576,7 +576,7 @@ defmodule Float do
   """
   @spec to_charlist(float) :: charlist
   def to_charlist(float) when is_float(float) do
-    :io_lib_format.fwrite_g(float)
+    :erlang.float_to_list(float, [:short])
   end
 
   @doc """
diff --git a/lib/elixir/lib/inspect.ex b/lib/elixir/lib/inspect.ex
index 725cc6e76d9..d901f189166 100644
--- a/lib/elixir/lib/inspect.ex
+++ b/lib/elixir/lib/inspect.ex
@@ -387,7 +387,7 @@ defimpl Inspect, for: Float do
       if abs >= 1.0 and abs < 1.0e16 and trunc(float) == float do
         [Integer.to_string(trunc(float)), ?., ?0]
       else
-        :io_lib_format.fwrite_g(float)
+        :erlang.float_to_list(float, [:short])
       end
 
     color(IO.iodata_to_binary(formatted), :number, opts)
diff --git a/lib/elixir/lib/list/chars.ex b/lib/elixir/lib/list/chars.ex
index 2ffa8cad604..eab1ab9a945 100644
--- a/lib/elixir/lib/list/chars.ex
+++ b/lib/elixir/lib/list/chars.ex
@@ -58,6 +58,6 @@ end
 
 defimpl List.Chars, for: Float do
   def to_charlist(term) do
-    :io_lib_format.fwrite_g(term)
+    :erlang.float_to_list(term, [:short])
   end
 end