From c6318ecb170c90e0eb336eeed16ca4755f99eee6 Mon Sep 17 00:00:00 2001
From: aiju <devnull@localhost>
Date: Mon, 8 Aug 2016 00:54:45 +0200
Subject: mptrunc: normalize after mpassign to handle the case b==r

---
 sys/src/libmp/port/mplogic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/src/libmp/port/mplogic.c b/sys/src/libmp/port/mplogic.c
index 22b61827b..3dd9be2ab 100644
--- a/sys/src/libmp/port/mplogic.c
+++ b/sys/src/libmp/port/mplogic.c
@@ -153,6 +153,7 @@ mptrunc(mpint *b, int n, mpint *r)
 	}else if(b->sign == 1){
 		if(d >= b->top){
 			mpassign(b, r);
+			mpnorm(r);
 			return;
 		}
 		if(b != r)
-- 
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