Add updated netlib dtoa.c from https://netlib.sandia.gov/fp/dtoa.c

Co-authored-by: Jesper Lundgren <[email protected]>

Author: zhuizhuhaomeng

.travis.yml

@@ -1,5 +1,5 @@
 sudo: required
-dist: trusty
+dist: Focal
 
 os: linux
 
@@ -17,6 +17,7 @@ addons:
     - libipc-run3-perl
     - lua5.1
     - lua5.1-dev
+    - cmake
 
 cache:
   apt: true
@@ -30,6 +31,7 @@ env:
       - LUAJIT=1 LUA_DIR=/usr/local LUA_INCLUDE_DIR=$LUA_DIR/include/luajit-2.1 LUA_SUFFIX=--lua-suffix=jit
 
 install:
+    - sudo ln -s /usr/bin/cmake /usr/local/bin/cmake
     - if [ -n "$LUAJIT" ]; then git clone -b v2.1-agentzh https://github.com/openresty/luajit2.git; fi
     - if [ -n "$LUAJIT" ]; then cd ./luajit2; fi
     - if [ -n "$LUAJIT" ]; then make -j$JOBS CCDEBUG=-g Q= PREFIX=$LUAJIT_PREFIX CC=$CC XCFLAGS='-DLUA_USE_APICHECK -DLUA_USE_ASSERT' > build.log 2>&1 || (cat build.log && exit 1); fi
@@ -53,3 +55,9 @@ script:
   - TEST_LUA_USE_VALGRIND=1 prove -Itests tests > build.log 2>&1; export e=$?
   - cat build.log
   - grep -E '^==[0-9]+==' build.log; if [ "$?" == 0 ]; then exit 1; else exit $e; fi
+  - cmake -DUSE_INTERNAL_FPCONV=1 .
+  - make
+  - prove -Itests tests
+  - TEST_LUA_USE_VALGRIND=1 prove -Itests tests > build.log 2>&1; export e=$?
+  - cat build.log
+  - grep -E '^==[0-9]+==' build.log; if [ "$?" == 0 ]; then exit 1; else exit $e; fi

CMakeLists.txt

@@ -4,7 +4,7 @@
 #       Windows: set LUA_DIR=c:\lua51
 
 project(lua-cjson C)
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 2.8.12)
 
 option(USE_INTERNAL_FPCONV "Use internal strtod() / g_fmt() code for performance")
 option(MULTIPLE_THREADS "Support multi-threaded apps with internal fpconv - recommended" ON)