From 64d0d3b8ac00ef31607314415b302eb61ec441d3 Mon Sep 17 00:00:00 2001
From: aiju <devnull@localhost>
Date: Thu, 6 Dec 2018 09:32:20 +0000
Subject: libmp: fix mptouv behaviour to match mptoui

---
 sys/src/libmp/port/mptouv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/src/libmp/port/mptouv.c b/sys/src/libmp/port/mptouv.c
index 760b38fb5..e657ebcbb 100644
--- a/sys/src/libmp/port/mptouv.c
+++ b/sys/src/libmp/port/mptouv.c
@@ -33,11 +33,11 @@ mptouv(mpint *b)
 	uvlong v;
 	int s;
 
-	if(b->top == 0)
+	if(b->top == 0 || b->sign < 0)
 		return 0LL;
 
 	if(b->top > VLDIGITS)
-		return MAXVLONG;
+		return -1LL;
 
 	v = 0ULL;
 	for(s = 0; s < b->top; s++)
-- 
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