From d3a06ba11faf4e5eda874dfa1c59af2bd53d965c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ja=C3=ABl=20Champagne=20Gareau?= <gareau_jael@hotmail.com>
Date: Mon, 2 Feb 2026 21:29:31 -0500
Subject: [PATCH] add the zmij algorithm

---
 benchmarks/CMakeLists.txt   |  4 ++++
 benchmarks/algorithms.h     | 11 ++++++++---
 dependencies/CMakeLists.txt | 10 ++++++++++
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/benchmarks/CMakeLists.txt b/benchmarks/CMakeLists.txt
index c277fc4..77f374f 100644
--- a/benchmarks/CMakeLists.txt
+++ b/benchmarks/CMakeLists.txt
@@ -88,6 +88,10 @@ else(TARGET swift_lib)
 endif(TARGET swift_lib)
 target_include_directories(benchmark_deps INTERFACE ${grisu-exact_SOURCE_DIR})
 
+add_library(zmij_lib STATIC ${zmij_SOURCE_DIR}/zmij.cc)
+target_include_directories(zmij_lib PUBLIC ${zmij_SOURCE_DIR})
+target_link_libraries(benchmark_deps INTERFACE zmij_lib)
+
 target_link_libraries(benchmark PUBLIC benchmark_deps)
 
 if(TO_CHARS_OK AND FROM_CHARS_OK)
diff --git a/benchmarks/algorithms.h b/benchmarks/algorithms.h
index 88e55ca..64801a4 100644
--- a/benchmarks/algorithms.h
+++ b/benchmarks/algorithms.h
@@ -17,11 +17,10 @@
 #include <gdtoa.h>  // Netlib
 #endif
 
-#include <fmt/format.h>
-
-#include <array>
 #include <span>
 
+#include <fmt/format.h>
+#include "zmij.h"
 #include "cpp/common/traits.hpp"  // Teju Jagua
 #include "PrintFloat.h"  // Dragon4
 #include "double-conversion/double-conversion.h"
@@ -352,6 +351,11 @@ int ryu(T d, std::span<char>& buffer) {
     return d2s_buffered_n(d, buffer.data());
 }
 
+template<arithmetic_float T>
+int zmij(T d, std::span<char>& buffer) {
+  return zmij::write(buffer.data(), buffer.size(), d);
+}
+
 template<arithmetic_float T>
 int teju_jagua(T d, std::span<char>& buffer) {
   const auto fields = teju::traits_t<T>::teju(d);
@@ -615,6 +619,7 @@ std::vector<BenchArgs<T>> initArgs(bool use_errol = false, size_t repeat = 0, si
     args.emplace_back("double_conversion" , wrap(s::double_conversion<T>) , true);
     args.emplace_back("swiftDtoa"         , wrap(s::swiftDtoa<T>)         , SWIFT_LIB_SUPPORTED);
     args.emplace_back("yy_double"         , wrap(s::yy_double<T>)         , YY_DOUBLE_SUPPORTED && std::is_same_v<T, double>);
+    args.emplace_back("zmij 1.0"          , wrap(s::zmij<T>)              , true);
     args.emplace_back("std::to_chars"     , wrap(s::std_to_chars<T>)      , TO_CHARS_SUPPORTED);
     // to_string, snprintf and abseil do not support shortest-length representation
     // grisu2 does not round-trip correctly
diff --git a/dependencies/CMakeLists.txt b/dependencies/CMakeLists.txt
index 3dc7f81..72c9c9b 100644
--- a/dependencies/CMakeLists.txt
+++ b/dependencies/CMakeLists.txt
@@ -73,6 +73,16 @@ FetchContent_MakeAvailable(grisu-exact)
 set(grisu-exact_SOURCE_DIR ${grisu-exact_SOURCE_DIR} PARENT_SCOPE)
 message(STATUS "grisu source directory: ${grisu-exact_SOURCE_DIR}")
 
+FetchContent_Declare(
+        zmij
+        GIT_REPOSITORY https://github.com/vitaut/zmij
+        GIT_TAG tags/v1.0
+        GIT_SHALLOW TRUE
+)
+FetchContent_Populate(zmij)
+set(zmij_SOURCE_DIR ${zmij_SOURCE_DIR} PARENT_SCOPE)
+message(STATUS "zmij source directory: ${zmij_SOURCE_DIR}")
+
 FetchContent_Declare(
         dragonbox
         GIT_REPOSITORY https://github.com/jk-jeon/dragonbox