DeforaNetworks/zzuf
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* Switch random back to 32 bits. It's enough (tm).

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This commit is contained in:
Sam Hocevar 2006-12-15 14:57:59 +00:00 committed by sam
parent f8fcc918b8
commit c73bf4e00f
2 changed files with 6 additions and 9 deletions
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11
src/random.c
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@ -27,20 +27,17 @@
#include "random.h" #include "random.h"
void zzuf_srand(uint64_t seed) void zzuf_srand(uint32_t seed)
{ {
uint32_t a = seed & 0xffffffff; srand(seed ^ 0x12345678);
uint32_t b = seed >> 32;
srand((a ^ 0x12345678) * (b ^ 0x87654321));
} }
uint64_t zzuf_rand(uint64_t max) uint32_t zzuf_rand(uint32_t max)
{ {
if(max <= RAND_MAX) if(max <= RAND_MAX)
return rand() % max; return rand() % max;
/* Could be better, but do we care? */ /* Could be better, but do we care? */
return (uint64_t)((max * 1.0) * (rand() / (RAND_MAX + 1.0))); return (uint32_t)((max * 1.0) * (rand() / (RAND_MAX + 1.0)));
} }

4
src/random.h
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@ -16,6 +16,6 @@
* random.h: pseudorandom number generator * random.h: pseudorandom number generator
*/ */
void zzuf_srand(uint64_t); void zzuf_srand(uint32_t);
uint64_t zzuf_rand(uint64_t); uint32_t zzuf_rand(uint32_t);