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| author | Jeff R. Allen <jra@nella.org> | 2016-05-24 23:00:06 +0600 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2016-05-24 19:07:46 +0000 |
| commit | 3474610fbc81f7e9f3f2cb23dc1554b3f5cec657 (patch) | |
| tree | 7285bee0906a7213ce4c4813c8d0e04435a40556 /src | |
| parent | 2f9eeea212681927385a4713004438cd864966e0 (diff) | |
| download | go-3474610fbc81f7e9f3f2cb23dc1554b3f5cec657.tar.xz | |
math/rand: Doc fix for how many bits Seed uses
Document the fact that the default Source uses only
the bottom 31 bits of the given seed.
Fixes #15788
Change-Id: If20d1ec44a55c793a4a0a388f84b9392c2102bd1
Reviewed-on: https://go-review.googlesource.com/23352
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/math/rand/rand.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/math/rand/rand.go b/src/math/rand/rand.go index d693bfb52f..add039ed4b 100644 --- a/src/math/rand/rand.go +++ b/src/math/rand/rand.go @@ -179,7 +179,8 @@ var globalRand = New(&lockedSource{src: NewSource(1)}) // Seed uses the provided seed value to initialize the default Source to a // deterministic state. If Seed is not called, the generator behaves as -// if seeded by Seed(1). +// if seeded by Seed(1). Only uses the bottom 31 bits of seed; the top 33 +// bits are ignored. func Seed(seed int64) { globalRand.Seed(seed) } // Int63 returns a non-negative pseudo-random 63-bit integer as an int64 |