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* It is very useful to keep the rand_state across reboots.

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bg- 2006-11-17 13:05:34 +00:00
parent f3a6cee55b
commit 09e5c8e09a
1 changed files with 8 additions and 1 deletions
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9
core/lib/rand.c
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@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* @(#)$Id: rand.c,v 1.1 2006/06/17 22:41:18 adamdunkels Exp $ * @(#)$Id: rand.c,v 1.2 2006/11/17 13:05:34 bg- Exp $
*/ */
#include "rand.h" #include "rand.h"
@ -43,7 +43,14 @@
* Comm. of the ACM, V. 31. No. 10, pp 1192-1201 * Comm. of the ACM, V. 31. No. 10, pp 1192-1201
*/ */
/*
* When possible, keep rand_state across reboots.
*/
#ifdef __GNUC__
unsigned long rand_state __attribute__((section(".noinit")));
#else
unsigned long rand_state = 123459876ul; unsigned long rand_state = 123459876ul;
#endif
int int
rand() rand()