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std::rand: use "nothing up your sleeve numbers" for ISAAC tests. 

There's no value in using the "random" numbers, when nothing up your
sleeve numbers are perfectly serviceable.

http://en.wikipedia.org/wiki/Nothing_up_my_sleeve_number
This commit is contained in:
Huon Wilson 2013-10-22 22:49:51 +11:00
parent 14a6a62a74
commit b8932c6304
1 changed files with 18 additions and 18 deletions
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36
src/libstd/rand/isaac.rs
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@ -434,14 +434,14 @@ mod test {
#[test]
fn test_rng_32_seeded() {
let seed = &[2, 32, 4, 32, 51];
let seed = &[1, 23, 456, 7890, 12345];
let mut ra: IsaacRng = SeedableRng::from_seed(seed);
let mut rb: IsaacRng = SeedableRng::from_seed(seed);
assert_eq!(ra.gen_ascii_str(100u), rb.gen_ascii_str(100u));
}
#[test]
fn test_rng_64_seeded() {
let seed = &[2, 32, 4, 32, 51];
let seed = &[1, 23, 456, 7890, 12345];
let mut ra: Isaac64Rng = SeedableRng::from_seed(seed);
let mut rb: Isaac64Rng = SeedableRng::from_seed(seed);
assert_eq!(ra.gen_ascii_str(100u), rb.gen_ascii_str(100u));
@ -472,46 +472,46 @@ mod test {
#[test]
fn test_rng_32_true_values() {
let seed = &[2, 32, 4, 32, 51];
let seed = &[1, 23, 456, 7890, 12345];
let mut ra: IsaacRng = SeedableRng::from_seed(seed);
// Regression test that isaac is actually using the above vector
let v = vec::from_fn(10, |_| ra.next_u32());
assert_eq!(v,
~[447462228, 2081944040, 3163797308, 2379916134, 2377489184,
1132373754, 536342443, 2995223415, 1265094839, 345325140]);
~[2558573138, 873787463, 263499565, 2103644246, 3595684709,
4203127393, 264982119, 2765226902, 2737944514, 3900253796]);
let seed = &[500, -4000, 123456, 9876543, 1, 1, 1, 1, 1];
let seed = &[12345, 67890, 54321, 9876];
let mut rb: IsaacRng = SeedableRng::from_seed(seed);
// skip forward to the 10000th number
for _ in range(0, 10000) { rb.next_u32(); }
let v = vec::from_fn(10, |_| rb.next_u32());
assert_eq!(v,
~[612373032, 292987903, 1819311337, 3141271980, 422447569,
310096395, 1083172510, 867909094, 2478664230, 2073577855]);
~[3676831399, 3183332890, 2834741178, 3854698763, 2717568474,
1576568959, 3507990155, 179069555, 141456972, 2478885421]);
}
#[test]
fn test_rng_64_true_values() {
let seed = &[2, 32, 4, 32, 51];
let seed = &[1, 23, 456, 7890, 12345];
let mut ra: Isaac64Rng = SeedableRng::from_seed(seed);
// Regression test that isaac is actually using the above vector
let v = vec::from_fn(10, |_| ra.next_u64());
assert_eq!(v,
~[15015576812873463115, 12461067598045625862, 14818626436142668771,
5562406406765984441, 11813289907965514161, 13443797187798420053,
6935026941854944442, 7750800609318664042, 14428747036317928637,
14028894460301215947]);
~[547121783600835980, 14377643087320773276, 17351601304698403469,
1238879483818134882, 11952566807690396487, 13970131091560099343,
4469761996653280935, 15552757044682284409, 6860251611068737823,
13722198873481261842]);
let seed = &[500, -4000, 123456, 9876543, 1, 1, 1, 1, 1];
let seed = &[12345, 67890, 54321, 9876];
let mut rb: Isaac64Rng = SeedableRng::from_seed(seed);
// skip forward to the 10000th number
for _ in range(0, 10000) { rb.next_u64(); }
let v = vec::from_fn(10, |_| rb.next_u64());
assert_eq!(v,
~[13557216323596688637, 17060829581390442094, 4927582063811333743,
2699639759356482270, 4819341314392384881, 6047100822963614452,
11086255989965979163, 11901890363215659856, 5370800226050011580,
16496463556025356451]);
~[18143823860592706164, 8491801882678285927, 2699425367717515619,
17196852593171130876, 2606123525235546165, 15790932315217671084,
596345674630742204, 9947027391921273664, 11788097613744130851,
10391409374914919106]);
}
}