From 0c0167a2a6e2bce1b53eb85e6f9bb258065b3f5a Mon Sep 17 00:00:00 2001
From: vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4>
Date: Thu, 19 Mar 2015 00:33:58 +0000
Subject: [src/sum.c] Added comments.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/branches/new-sum@9342 280ebfd0-de03-0410-8827-d642c229c3f4
---
 src/sum.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/sum.c b/src/sum.c
index a47114aa7..64ec4f533 100644
--- a/src/sum.c
+++ b/src/sum.c
@@ -886,7 +886,7 @@ sum_aux (mpfr_ptr sum, mpfr_ptr *const x, unsigned long n, mpfr_rnd_t rnd,
 
     MPFR_ASSERTD (corr >= -1 && corr <= 2);
 
-    if (pos)
+    if (pos)  /* positive result */
       {
         MPFR_ASSERTD (MPFR_LIMB_MSB (sump[sn-1]) != 0);
         MPFR_SET_POS (sum);
@@ -927,7 +927,7 @@ sum_aux (mpfr_ptr sum, mpfr_ptr *const x, unsigned long n, mpfr_rnd_t rnd,
               }
           }
       }
-    else
+    else  /* negative result */
       {
         MPFR_ASSERTD (MPFR_LIMB_MSB (sump[sn-1]) == 0);
         MPFR_SET_NEG (sum);
-- 
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