From 9fb9f17dac79af9a9855a80252ea7839ae2b1237 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@meta.com>
Date: Wed, 17 Sep 2025 09:04:32 -0700
Subject: [PATCH] Update changelog

---
 ChangeLog.md | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/ChangeLog.md b/ChangeLog.md
index 4373958d..b0018927 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,7 +2,18 @@
 
 - Optimized the default floating point formatting
   (https://github.com/fmtlib/fmt/issues/3675,
-  https://github.com/fmtlib/fmt/issues/4516).
+  https://github.com/fmtlib/fmt/issues/4516). In particular, formatting a
+  `double` with format string compilation into a stack allocated buffer is
+  more than 60% faster in version 12.0 compared to 11.2 according to
+  [dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark):
+
+  ```
+  Function	Time (ns)  Speedup
+  fmt11        34.471    1.00x
+  fmt12	       21.000    1.64x
+  ```
+
+  <img width="766" height="609" src="https://github.com/user-attachments/assets/d7d768ad-7543-468c-b0bb-449abf73b31b" />
 
 - Added `constexpr` support to `fmt::format`. For example: