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1 module wyrand
2 
3 fn C._wymix(u64, u64) u64
4 
5 // free should be called when the generator is no longer needed.
6 // WyRandRNG contains no heap-allocated fields, so this is a no-op.
7 @[unsafe]
8 pub fn (mut rng WyRandRNG) free() {
9 }
10 
11 // u64 returns a pseudorandom 64bit int in range `[0, 2⁶⁴)`.
12 @[ignore_overflow; inline]
13 pub fn (mut rng WyRandRNG) u64() u64 {
14     unsafe {
15         mut seed1 := rng.state
16         seed1 += wyp0
17         rng.state = seed1
18         return C._wymix(seed1 ^ wyp1, seed1)
19     }
20     return 0
21 }
22

1	module wyrand
2
3	fn C._wymix(u64, u64) u64
4
5	// free should be called when the generator is no longer needed.
6	// WyRandRNG contains no heap-allocated fields, so this is a no-op.
7	@[unsafe]
8	pub fn (mut rng WyRandRNG) free() {
9	}
10
11	// u64 returns a pseudorandom 64bit int in range `[0, 2⁶⁴)`.
12	@[ignore_overflow; inline]
13	pub fn (mut rng WyRandRNG) u64() u64 {
14	unsafe {
15	mut seed1 := rng.state
16	seed1 += wyp0
17	rng.state = seed1
18	return C._wymix(seed1 ^ wyp1, seed1)
19	}
20	return 0
21	}
22