mps br/vmem: simple-chunk-return:

testlib.c (comments only) record dates of changes from v1 -> v2 -> v3 rnd_states.

Copied from Perforce
 Change: 170094
 ServerID: perforce.ravenbrook.com

1 files changed, 11 insertions, 7 deletions

diff --git a/mps/code/testlib.c b/mps/code/testlib.c
index 0bc8771f134..027cbd2f9cd 100644
--- a/mps/code/testlib.c
+++ b/mps/code/testlib.c
@@ -226,17 +226,21 @@ mps_addr_t rnd_addr(void)
  * There have been 3 versions of the rnd-states reported by this 
  * function:
  *
- * 1. before RHSK got his hands on rnd().  These seed values are not 
- *    currently supported, but it might be easy to add support.
+ * 1. before RHSK got his hands on rnd(), ie. pre-2008.  These seed 
+ *    values are not currently supported, but it might be easy to 
+ *    add support.
  *
  * 2. v2 states: the published "seed" (state) value was the seed 
  *    *before* the 10 rnds to churn up and separate nearby values 
- *    from time().  This is unfortunate: you can't write a rnd_state 
- *    getter, because it would have to go 10 steps back in time.
+ *    from time().  This was unfortunate: you can't write a rnd_state 
+ *    getter, because it would have to go 10 steps backwards, and 
+ *    that's impossible.
+ *    (2008..2010-03-22)
  *
- * 3. v3 states: when autogenerated from time(), the published 
- *    state is that *after* the 10 rnds.  Therefore you can get this 
- *    easily, store it, re-use it, etc.
+ * 3. v3 states: when autogenerated from time(), the published state 
+ *    (printf'd) is that *after* the 10 rnds.  Therefore you can get 
+ *    the state easily, store it, re-use it, etc.
+ *    (New from 2010-03-22, changelist 170093)
  */
 
 void randomize(int argc, char **argv)