restore mistakenly removed iffs in their explicit form

Due to confusion arisen from "iff" standing for "if and only if",
this commit uses the latter.

3 files changed, 14 insertions, 11 deletions

diff --git a/googlemock/test/gmock-cardinalities_test.cc b/googlemock/test/gmock-cardinalities_test.cc
index 66042d40..ca97cae2 100644
--- a/googlemock/test/gmock-cardinalities_test.cc
+++ b/googlemock/test/gmock-cardinalities_test.cc
@@ -395,12 +395,14 @@ TEST(ExactlyTest, HasCorrectBounds) {
 
 class EvenCardinality : public CardinalityInterface {
  public:
-  // Returns true if call_count calls will satisfy this cardinality.
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
   bool IsSatisfiedByCallCount(int call_count) const override {
     return (call_count % 2 == 0);
   }
 
-  // Returns true if call_count calls will saturate this cardinality.
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
   bool IsSaturatedByCallCount(int /* call_count */) const override {
     return false;
   }
diff --git a/googlemock/test/gmock-matchers_test.cc b/googlemock/test/gmock-matchers_test.cc
index a61d040b..88f144d1 100644
--- a/googlemock/test/gmock-matchers_test.cc
+++ b/googlemock/test/gmock-matchers_test.cc
@@ -956,10 +956,9 @@ TEST(TypedEqTest, CanDescribeSelf) {
 
 // Tests that TypedEq<T>(v) has type Matcher<T>.
 
-// Type<T>::IsTypeOf(v) compiles if the type of value v is T, where T
-// is a "bare" type (i.e. not in the form of const U or U&).  If v's
-// type is not T, the compiler will generate a message about
-// "undefined reference".
+// Type<T>::IsTypeOf(v) compiles if and only if the type of value v is T, where
+// T is a "bare" type (i.e. not in the form of const U or U&).  If v's type is
+// not T, the compiler will generate a message about "undefined reference".
 template <typename T>
 struct Type {
   static bool IsTypeOf(const T& /* v */) { return true; }
@@ -2640,8 +2639,8 @@ class IsGreaterThan {
 // For testing Truly().
 const int foo = 0;
 
-// This predicate returns true if the argument references foo and has
-// a zero value.
+// This predicate returns true if and only if the argument references foo and
+// has a zero value.
 bool ReferencesFooAndIsZero(const int& n) {
   return (&n == &foo) && (n == 0);
 }
@@ -3594,7 +3593,7 @@ class Uncopyable {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(Uncopyable);
 };
 
-// Returns true if x.value() is positive.
+// Returns true if and only if x.value() is positive.
 bool ValueIsPositive(const Uncopyable& x) { return x.value() > 0; }
 
 MATCHER_P(UncopyableIs, inner_matcher, "") {
diff --git a/googlemock/test/gmock-spec-builders_test.cc b/googlemock/test/gmock-spec-builders_test.cc
index 95b4b8b7..7bf5a8ad 100644
--- a/googlemock/test/gmock-spec-builders_test.cc
+++ b/googlemock/test/gmock-spec-builders_test.cc
@@ -1952,12 +1952,14 @@ TEST(DeletingMockEarlyTest, Failure2) {
 
 class EvenNumberCardinality : public CardinalityInterface {
  public:
-  // Returns true if call_count calls will satisfy this cardinality.
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
   bool IsSatisfiedByCallCount(int call_count) const override {
     return call_count % 2 == 0;
   }
 
-  // Returns true if call_count calls will saturate this cardinality.
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
   bool IsSaturatedByCallCount(int /* call_count */) const override {
     return false;
   }