document precondition on result extraction for density accumulator

[SVN r53405]
This commit is contained in:
Eric Niebler 2009-05-29 18:21:13 +00:00
parent e654f387da
commit b686fd2140

@ -1 +1 @@
Subproject commit 4e530e085e445aa4971f13d7002876c3f1feca71
Subproject commit d96b36a33bd27a9e3eb3df752160a2c583af6668