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Update changelog

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Victor Zverovich
2025-09-17 09:04:32 -07:00
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ChangeLog.md
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@@ -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: