add upstream 11.2

1 files changed, 18 insertions, 7 deletions

diff --git a/zen/legacy_compiler.h b/zen/legacy_compiler.h
index 82c404d8..ad5442fe 100644
--- a/zen/legacy_compiler.h
+++ b/zen/legacy_compiler.h
@@ -7,26 +7,37 @@
 #ifndef LEGACY_COMPILER_H_839567308565656789
 #define LEGACY_COMPILER_H_839567308565656789
 
+#include <version>
 
+/*  C++ standard conformance:
+    https://en.cppreference.com/w/cpp/feature_test
+    https://en.cppreference.com/w/User:D41D8CD98F/feature_testing_macros
+    https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
+
+    MSVC https://docs.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance
+
+    GCC       https://gcc.gnu.org/projects/cxx-status.html
+    libstdc++ https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html
+
+    Clang  https://clang.llvm.org/cxx_status.html#cxx20
+    libc++ https://libcxx.llvm.org/cxx2a_status.html                                     */
 
-//https://en.cppreference.com/w/cpp/feature_test
-//https://en.cppreference.com/w/User:D41D8CD98F/feature_testing_macros
-//https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
-//https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html
 namespace std
 {
+
+
 }
 //---------------------------------------------------------------------------------
 
 //constinit, consteval
-    #define constinit2 constinit //GCC has it
+    #define constinit2 constinit //GCC, clang have it
     #define consteval2 consteval //
 
 
 namespace zen
 {
-double from_chars(const char* first, const char* last);
-const char* to_chars(char* first, char* last, double num);
+double fromChars(const char* first, const char* last);
+const char* toChars(char* first, char* last, double num);
 }
 
 #endif //LEGACY_COMPILER_H_839567308565656789