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| author | Michael Walle <michael@walle.cc> | 2012-06-05 11:33:14 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:32 +0200 |
| commit | 9acf1ca50d8b031511d146f6ffd73201fedce28c (patch) | |
| tree | a10e3bb54c3a410ea568ce0d69ff9ef42a601145 /include/common.h | |
| parent | d131ad68c6566749df10154d2a6fa93df5865495 (diff) | |
| download | u-boot-imx-9acf1ca50d8b031511d146f6ffd73201fedce28c.zip u-boot-imx-9acf1ca50d8b031511d146f6ffd73201fedce28c.tar.gz u-boot-imx-9acf1ca50d8b031511d146f6ffd73201fedce28c.tar.bz2 | |
lib: add rand() function
It's a PRNG using the simple and fast xorshift method.
Signed-off-by: Michael Walle <michael@walle.cc>
Cc: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'include/common.h')
| -rw-r--r-- | include/common.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h index 7cf15c5..e16c53e 100644 --- a/include/common.h +++ b/include/common.h @@ -760,6 +760,14 @@ char * strmhz(char *buf, unsigned long hz); /* lib/crc32.c */ #include <u-boot/crc.h> +/* lib/rand.c */ +#ifdef CONFIG_RANDOM_MACADDR +#define RAND_MAX -1U +void srand(unsigned int seed); +unsigned int rand(void); +unsigned int rand_r(unsigned int *seedp); +#endif + /* common/console.c */ int console_init_f(void); /* Before relocation; uses the serial stuff */ int console_init_r(void); /* After relocation; uses the console stuff */ |