From a2791dc25392472c9dc2c8a2f738f6695fc8d292 Mon Sep 17 00:00:00 2001
From: David Gow <david@ingeniumdigital.com>
Date: Sun, 6 Jul 2014 22:31:09 +0800
Subject: [PATCH] Maybe this is more correct. realops likes it.

---
 src/arbint.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/arbint.cpp b/src/arbint.cpp
index 696dcd0..582d99a 100644
--- a/src/arbint.cpp
+++ b/src/arbint.cpp
@@ -203,7 +203,10 @@ Arbint & Arbint::SubBasic(const Arbint & sub)
 	{
 		m_sign = !m_sign;
 		for (unsigned i = 0; i < m_digits.size(); ++i)
-			m_digits[i] = (~m_digits[i]) + 1;
+			m_digits[i] = (~m_digits[i]);
+		std::vector<digit_t> one_digits(m_digits.size(), 0L);
+		one_digits[0] = 1;
+		add_digits((digit_t*)m_digits.data(), (digit_t*)one_digits.data(), m_digits.size());
 	}
 	return *this;
 }
-- 
2.20.1