[Git][cmucl/cmucl][rtoy-xoro-default] Update release notes

[Raymond Toy]

Raymond Toy pushed to branch rtoy-xoro-default at cmucl / cmucl


Commits:
d8ef7876 by Raymond Toy at 2017-12-29T10:20:13-08:00
Update release notes

- - - - -


1 changed file:

- src/general-info/release-21d.md


Changes:

=====================================
src/general-info/release-21d.md
=====================================
--- a/src/general-info/release-21d.md
+++ b/src/general-info/release-21d.md
@@ -21,6 +21,11 @@ public domain.
   * Feature enhancements
     * Update to ASDF 3.3.1, fixing issues introduced in 3.3.0
   * Changes
+    * x86 and sparc have replaced the MT19937 RNG with xoroshiro128+ RNG.
+      * The required state for this generator is just 4 32-bit words instead of the 600+ for MT19937.
+      * The generator is also faster than MT19937 (approximately 28% faster on x86 and 18% on sparc).
+      * The new function `KERNEL:RANDOM-STATE-JUMP` modifies the given state to jump 2^64 samples ahead, allowing 2^64 non-overlapping sequences.
+
   * ANSI compliance fixes:
   * Bug fixes:
   * Gitlab tickets:



View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/d8ef787644b5a460ff7fb0b3781d7c51d655cb7f

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View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/d8ef787644b5a460ff7fb0b3781d7c51d655cb7f
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