hush: replace flag bytes in struct o_string with bit flags

[oweals/busybox.git] / shell / random.h

diff --git a/shell/random.h b/shell/random.h
index 8667e1c99b884368b906aad18cf4bc8e6cb6e549..180c48abbf20abfef936953363c00913a5a279e9 100644 (file)
--- a/shell/random.h
+++ b/shell/random.h
@@ -4,8 +4,12 @@
  *
  * Copyright (C) 2009 Denys Vlasenko
  *
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
  */
+#ifndef SHELL_RANDOM_H
+#define SHELL_RANDOM_H 1
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 typedef struct random_t {
        /* Random number generators */
@@ -13,7 +17,17 @@ 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;
+
+POP_SAVED_FUNCTION_VISIBILITY
+
+#endif