DBot/overdrive_that_matters
DBot/overdrive_that_matters
3
1
Fork 0
Code Issues 63 Pull Requests Packages Releases Wiki Activity

Initialize carry using lcg instead of modulo divide seed

Browse Source
This commit is contained in:
DBotThePony 2025-03-05 07:58:48 +07:00
parent 9417d6ffdc
commit d326e45b32
Signed by: DBot
GPG Key ID: DCC23B5715498507
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/main/kotlin/ru/dbotthepony/mc/otm/core/util/CMWCRandom.kt
View File

@ -22,8 +22,6 @@ class CMWCRandom(seed: Long = System.nanoTime()) : RandomGenerator, RandomSource
override fun setSeed(seed: Long) { override fun setSeed(seed: Long) {
this.seed = seed this.seed = seed
carry = Integer.remainderUnsigned(seed.toInt(), CMWC_CARRY_MAX)
var lcg = seed var lcg = seed
// init state with regular LCG produced values // init state with regular LCG produced values
@ -32,6 +30,11 @@ class CMWCRandom(seed: Long = System.nanoTime()) : RandomGenerator, RandomSource
state[i] = lcg.ushr(32).toInt() state[i] = lcg.ushr(32).toInt()
} }
do {
lcg = lcg * 6364136223846793005 + 1442695040888963407
carry = lcg.ushr(32).toInt()
} while(carry !in 0 until CMWC_CARRY_MAX)
stateIndex = state.size - 1 stateIndex = state.size - 1
gaussian.reset() gaussian.reset()
} }