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rand: separate rand.util and rand.seed submodules (#8353)

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This commit is contained in:
Subhomoy Haldar
2021-01-26 19:25:09 +05:30
committed by GitHub
parent 5f2b2df546
commit 97103f680a
16 changed files with 107 additions and 104 deletions
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9
vlib/rand/wyrand/wyrand.v
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@@ -4,8 +4,9 @@
module wyrand
import math.bits
import rand.seed
import rand.util
import hash as wyhash
import hash
// Redefinition of some constants that we will need for pseudorandom number generation.
const (
@@ -16,7 +17,7 @@ const (
// WyRandRNG is a RNG based on the WyHash hashing algorithm.
pub struct WyRandRNG {
mut:
state u64 = util.time_seed_64()
state u64 = seed.time_seed_64()
has_extra bool
extra u32
}
@@ -51,9 +52,9 @@ pub fn (mut rng WyRandRNG) u32() u32 {
pub fn (mut rng WyRandRNG) u64() u64 {
unsafe {
mut seed1 := rng.state
seed1 += wyp0
seed1 += wyrand.wyp0
rng.state = seed1
return wyhash.wymum(seed1 ^ wyp1, seed1)
return hash.wymum(seed1 ^ wyrand.wyp1, seed1)
}
return 0
}

6
vlib/rand/wyrand/wyrand_test.v
View File

@@ -1,5 +1,5 @@
import math
import rand.util
import rand.seed
import rand.wyrand
const (
@@ -16,7 +16,7 @@ const (
fn gen_randoms(seed_data []u32, bound int) []u64 {
bound_u64 := u64(bound)
mut randoms := []u64{len:(20)}
mut randoms := []u64{len: (20)}
mut rnd := wyrand.WyRandRNG{}
rnd.seed(seed_data)
for i in 0 .. 20 {
@@ -26,7 +26,7 @@ fn gen_randoms(seed_data []u32, bound int) []u64 {
}
fn test_wyrand_reproducibility() {
seed_data := util.time_seed_array(2)
seed_data := seed.time_seed_array(2)
randoms1 := gen_randoms(seed_data, 1000)
randoms2 := gen_randoms(seed_data, 1000)
assert randoms1.len == randoms2.len