Use dconv for double conversion

README.md

@@ -83,6 +83,12 @@ Install required libraries and test dependencies:
 sudo apt install pkg-config libssl-dev zlib1g-dev libgtest-dev libgmock-dev
 ```
 
+Install [dconv](https://github.com/joinframework/dconv) from its release package:
+```bash
+wget https://github.com/joinframework/dconv/releases/download/v1.1.0/libdconv-dev_1.1.0_all.deb
+sudo apt install ./libdconv-dev_1.1.0_all.deb
+```
+
 > **Compilers:** GCC 11+ or Clang 16+ (C++20). Clang requires `libclang-rt-dev` for coverage instrumentation (`--coverage`).  
 > **OpenSSL** provides the core TLS runtime.  
 > **Platform:** Linux 5.11+ and glibc 2.35+ (`epoll_pwait2`). The io_uring backend requires Linux 6.0+ (multishot `recv`).

cmake/joinConfig.cmake.in

@@ -23,6 +23,7 @@ foreach(comp ${join_FIND_COMPONENTS})
 endforeach()
 
 if(@JOIN_ENABLE_DATA@ OR @JOIN_ENABLE_SERVICES@)
+    find_dependency(dconv 1.1.0)
     find_dependency(ZLIB)
 endif()
 

cmake/packaging.cmake

@@ -32,7 +32,7 @@ if(JOIN_ENABLE_CRYPTO)
     string(APPEND JOIN_DEV_DEPENDS ", libssl-dev")
 endif()
 if(JOIN_ENABLE_DATA)
-    string(APPEND JOIN_DEV_DEPENDS ", zlib1g-dev")
+    string(APPEND JOIN_DEV_DEPENDS ", libdconv-dev (>= 1.1.0), zlib1g-dev")
 endif()
 if(JOIN_ENABLE_IO_URING)
     string(APPEND JOIN_DEV_DEPENDS ", liburing-dev")

data/CMakeLists.txt

@@ -1,15 +1,11 @@
 cmake_minimum_required(VERSION 3.22.1)
 
+find_package(dconv 1.1.0 REQUIRED)
 find_package(ZLIB REQUIRED)
 
 set(PUBLIC_HEADERS
-    include/join/diyfp.hpp
-    include/join/atodpow.hpp
-    include/join/dtoapow.hpp
-    include/join/dtoa.hpp
     include/join/utf8.hpp
     include/join/utf16.hpp
-    include/join/probe.hpp
     include/join/value.hpp
     include/join/value_builder.hpp
     include/join/sax_error.hpp
@@ -47,6 +43,7 @@ target_include_directories(${JOIN_DATA}
 target_link_libraries(${JOIN_DATA}
     PUBLIC
         ${JOIN_CORE}
+        dconv::dconv
         ZLIB::ZLIB
 )