1 files changed, 6 insertions, 5 deletions

diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index 9605c43..c946271 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -99,7 +99,8 @@ struct BuiltInDefaultValueGetter<T, false> {
 template <typename T>
 class BuiltInDefaultValue {
  public:
-  // This function returns true if type T has a built-in default value.
+  // This function returns true if and only if type T has a built-in default
+  // value.
   static bool Exists() {
     return ::std::is_default_constructible<T>::value;
   }
@@ -208,7 +209,7 @@ class DefaultValue {
     producer_ = nullptr;
   }
 
-  // Returns true if the user has set the default value for type T.
+  // Returns true if and only if the user has set the default value for type T.
   static bool IsSet() { return producer_ != nullptr; }
 
   // Returns true if T has a default return value set by the user or there
@@ -269,7 +270,7 @@ class DefaultValue<T&> {
   // Unsets the default value for type T&.
   static void Clear() { address_ = nullptr; }
 
-  // Returns true if the user has set the default value for type T&.
+  // Returns true if and only if the user has set the default value for type T&.
   static bool IsSet() { return address_ != nullptr; }
 
   // Returns true if T has a default return value set by the user or there
@@ -375,7 +376,7 @@ class Action {
   template <typename Func>
   explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
 
-  // Returns true if this is the DoDefault() action.
+  // Returns true if and only if this is the DoDefault() action.
   bool IsDoDefault() const { return fun_ == nullptr; }
 
   // Performs the action.  Note that this method is const even though
@@ -395,7 +396,7 @@ class Action {
   template <typename G>
   friend class Action;
 
-  // fun_ is an empty function if this is the DoDefault() action.
+  // fun_ is an empty function if and only if this is the DoDefault() action.
   ::std::function<F> fun_;
 };