Conform to the Google styleguide more and make cpplint happy, add more
CHECK macros.
Preemptively addresses cpplint's readability/check warnings ("Consider
using CHECK_GT instead of CHECK(a > b)".)
#endif
#define CHECK_EQ(a, b) CHECK((a) == (b))
+#define CHECK_GE(a, b) CHECK((a) >= (b))
+#define CHECK_GT(a, b) CHECK((a) > (b))
+#define CHECK_LE(a, b) CHECK((a) <= (b))
+#define CHECK_LT(a, b) CHECK((a) < (b))
#define CHECK_NE(a, b) CHECK((a) != (b))
#define UNREACHABLE() abort()