1 files changed, 6 insertions, 0 deletions

diff --git a/shell/random.h b/shell/random.h
index 8667e1c99..e22a2e88b 100644
--- a/shell/random.h
+++ b/shell/random.h
@@ -13,7 +13,13 @@ typedef struct random_t {
         uint32_t LCG;        /* LCG (fast but weak) */
 } random_t;
 
+#define UNINITED_RANDOM_T(rnd) \
+        ((rnd)->galois_LFSR == 0)
+
 #define INIT_RANDOM_T(rnd, nonzero, v) \
         ((rnd)->galois_LFSR = (nonzero), (rnd)->LCG = (v))
 
+#define CLEAR_RANDOM_T(rnd) \
+        ((rnd)->galois_LFSR = 0)
+
 uint32_t next_random(random_t *rnd) FAST_FUNC;