id128: add new sd_id128_is_null() call

2015-02-24 17:27:53 +01:00
parent ce06fdfb3d
commit 15e80c7b75
1 changed files with 4 additions and 0 deletions
@@ -106,6 +106,10 @@ _sd_pure_ static inline int sd_id128_equal(sd_id128_t a, sd_id128_t b) {
        return memcmp(&a, &b, 16) == 0;
 }

+_sd_pure_ static inline int sd_id128_is_null(sd_id128_t a) {
+        return a.qwords[0] == 0 && a.qwords[1] == 0;
+}
+
 #define SD_ID128_NULL ((const sd_id128_t) { .qwords = { 0, 0 }})

 _SD_END_DECLARATIONS;