From 31a26c05e0838abf3134200a5bac23aa523115ed Mon Sep 17 00:00:00 2001
From: zimmerma <zimmerma@211d60ee-9f03-0410-a15a-8952a2c7a4e4>
Date: Fri, 25 Jan 2008 21:06:27 +0000
Subject: added notes about mpc_log

git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@69 211d60ee-9f03-0410-a15a-8952a2c7a4e4
---
 TODO | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/TODO b/TODO
index 417683d..0233586 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,8 @@
 New functions to implement:
 - complex logarithm: look at algorithm and error analysis in Regis Dupont's
   PhD thesis <http://www.lix.polytechnique.fr/Labo/Regis.Dupont/index.html>
+  Cf mail from Michael <comtech.usa@gmail.com> on mpfr list, 25 Jan 2008.
+  log(a+I*b) = 1/2*log(a^2+b^2) + I*atan2(b,a).
 - from Mickael Gastineau <gastineau@imcce.fr> 20 Feb 2007:
   int mpc_fr_div (mpc_t rop, mpfr_t op1, mpc_t op2, mpc_rnd_t rnd)
       rop = op1 / op2
-- 
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