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authorSverker Eriksson <[email protected]>2011-10-18 16:05:14 +0200
committerSverker Eriksson <[email protected]>2011-10-18 16:12:00 +0200
commit852827dab8fa74167f9a000998304e3961010797 (patch)
treef593dfab5b0b8d33efffec2cd8945c44cc9f4a20 /lib/stdlib/doc/src
parent0bff7dcedcb793f1d4d016ecee893964c790ded1 (diff)
parentb52a2170d13fe7ff6e4e3b146b63d8f68c2aaadf (diff)
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Merge branch 'sverker/random-improved-algo'
* sverker/random-improved-algo: Improve algorithm in module random. Fix a bug in the implementation of the pseudo-random number generator OTP-8713
Diffstat (limited to 'lib/stdlib/doc/src')
-rw-r--r--lib/stdlib/doc/src/random.xml5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/stdlib/doc/src/random.xml b/lib/stdlib/doc/src/random.xml
index 93affc3191..1b8fa44883 100644
--- a/lib/stdlib/doc/src/random.xml
+++ b/lib/stdlib/doc/src/random.xml
@@ -136,6 +136,11 @@
<c>random_seed</c> to remember the current seed.</p>
<p>If a process calls <c>uniform/0</c> or <c>uniform/1</c> without
setting a seed first, <c>seed/0</c> is called automatically.</p>
+ <p>The implementation changed in R15. Upgrading to R15 will break
+ applications that expect a specific output for a given seed. The output
+ is still deterministic number series, but different compared to releases
+ older than R15. The seed <c>{0,0,0}</c> will for example no longer
+ produce a flawed series of only zeros.</p>
</section>
</erlref>