From: Christian Bauer <Christian.Bauer@uni-mainz.de>
Date: Thu, 17 Jul 2003 20:58:38 +0000 (+0000)
Subject: documentation update
X-Git-Tag: release_1-0-15~24
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=201fc92bfd5806596a5a75a5ae0586d7302c0897

documentation update
---

diff --git a/NEWS b/NEWS
index 13d62539..dcf259c8 100644
--- a/NEWS
+++ b/NEWS
@@ -3,11 +3,15 @@ This file records noteworthy changes.
 1.2.0 (<insert date>)
 * Added a structure<T> template class for the easy creation of user-defined
   algebraic classes.
+* Improved the speed of subs() and normal() by the use of maps instead of
+  lists.
 * Many internal reorganizations and optimizations.
 * Caveats for class implementors:
    - basic::copy() and basic::destroy() are gone; classes derived from
      basic can use the defaults for the assignment operator and copy
      constructor.
+   - basic::subs() and basic::normal() take an 'exmap &' instead of two
+     'lst &'.
    - basic::subs() now descends into subexpressions (if accessible via
      nops()/op()/let_op()). If you have a custom implementation of subs()
      that calls basic::subs() after substituting subexpressions, this needs