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Split random number generation out into core/random.c, and create the

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correct prototypes for srandom(), rand() and srand().
This commit is contained in:
Michael Brown
2007-01-19 02:02:59 +00:00
parent f4c1e564a1
commit 4256b3338a
3 changed files with 83 additions and 23 deletions
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18
src/core/misc.c
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@@ -55,24 +55,6 @@ uint16_t add_ipchksums(unsigned long offset, uint16_t sum, uint16_t new)
return (~checksum) & 0xFFFF;
}
/**************************************************************************
RANDOM - compute a random number between 0 and 2147483647L or 2147483562?
**************************************************************************/
long int random(void)
{
static int32_t seed = 0;
int32_t q;
if (!seed) /* Initialize linear congruential generator */
seed = currticks();
/* simplified version of the LCG given in Bruce Schneier's
"Applied Cryptography" */
q = seed/53668;
if ((seed = 40014*(seed-53668*q) - 12211*q) < 0) seed += 2147483563L;
return seed;
}
/**************************************************************************
SLEEP
**************************************************************************/