diff options
Diffstat (limited to 'src/prng')
| -rw-r--r-- | src/prng/rand.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/prng/rand.c b/src/prng/rand.c index e3ce6347..c000cd24 100644 --- a/src/prng/rand.c +++ b/src/prng/rand.c @@ -1,6 +1,7 @@ #include <stdlib.h> +#include <stdint.h> -static unsigned seed; +static uint64_t seed; void srand(unsigned s) { @@ -9,5 +10,6 @@ void srand(unsigned s) int rand(void) { - return (seed = (seed+1) * 1103515245 + 12345 - 1)+1 & 0x7fffffff; + seed = 6364136223846793005ULL*seed + 1; + return seed>>33; } |