Minor fixup in <ratio> and add optional support for shared_mutex and upgrade_mutex which must be opted into with #define _LIBCPP_SHARED_LOCK
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@120258 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/ratio b/include/ratio
index b9b43d8..7369ccf 100644
--- a/include/ratio
+++ b/include/ratio
@@ -276,10 +276,7 @@
template <class _R1, class _R2>
struct _LIBCPP_VISIBLE ratio_multiply
- : public __ratio_multiply<_R1, _R2>::type
-{
- typedef typename __ratio_multiply<_R1, _R2>::type type;
-};
+ : public __ratio_multiply<_R1, _R2>::type {};
template <class _R1, class _R2>
struct __ratio_divide
@@ -297,10 +294,7 @@
template <class _R1, class _R2>
struct _LIBCPP_VISIBLE ratio_divide
- : public __ratio_divide<_R1, _R2>::type
-{
- typedef typename __ratio_divide<_R1, _R2>::type type;
-};
+ : public __ratio_divide<_R1, _R2>::type {};
template <class _R1, class _R2>
struct __ratio_add
@@ -326,10 +320,7 @@
template <class _R1, class _R2>
struct _LIBCPP_VISIBLE ratio_add
- : public __ratio_add<_R1, _R2>::type
-{
- typedef typename __ratio_add<_R1, _R2>::type type;
-};
+ : public __ratio_add<_R1, _R2>::type {};
template <class _R1, class _R2>
struct __ratio_subtract
@@ -355,10 +346,7 @@
template <class _R1, class _R2>
struct _LIBCPP_VISIBLE ratio_subtract
- : public __ratio_subtract<_R1, _R2>::type
-{
- typedef typename __ratio_subtract<_R1, _R2>::type type;
-};
+ : public __ratio_subtract<_R1, _R2>::type {};
// ratio_equal