From a30822cf64d7581afb1eb4da44f219e48088f19d Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 19 Jan 2007 17:35:38 +0100
Subject: [PATCH] QQ: add operator for multiplication by a scalar (ZZ)

---
 NTL_QQ.cc         | 7 +++++++
 barvinok/NTL_QQ.h | 8 ++++++++
 2 files changed, 15 insertions(+)

diff --git a/NTL_QQ.cc b/NTL_QQ.cc
index 58c8164..ce5ae82 100644
--- a/NTL_QQ.cc
+++ b/NTL_QQ.cc
@@ -3,6 +3,13 @@
 
 NTL_vector_impl(QQ,vec_QQ);
 
+vec_QQ& operator *= (vec_QQ& a, const ZZ& b)
+{
+    for (int i = 0; i < a.length(); ++i)
+	a[i] *= b;
+    return a;
+}
+
 std::ostream& operator<< (std::ostream& os, const QQ& q)
 {
     os << q.n << "/" << q.d;
diff --git a/barvinok/NTL_QQ.h b/barvinok/NTL_QQ.h
index cb4be94..6c75bc3 100644
--- a/barvinok/NTL_QQ.h
+++ b/barvinok/NTL_QQ.h
@@ -17,6 +17,7 @@ struct QQ {
 	this->n = n;
 	this->d = d;
     }
+
     QQ& operator += (const QQ& a) {
 	ZZ g = GCD(d, a.d);
 	ZZ num = a.n * (d / g) + (a.d / g) * n;
@@ -32,10 +33,17 @@ struct QQ {
 	d *= a.d;
 	return *this;
     }
+
+    QQ& operator *= (const ZZ& a) {
+	n *= a;
+	return *this;
+    }
 };
 
 NTL_vector_decl(QQ,vec_QQ);
 
+vec_QQ& operator *= (vec_QQ& a, const ZZ& b);
+
 std::ostream& operator<< (std::ostream& os, const QQ& q);
 std::istream& operator>> (std::istream& os, QQ& q);
 
-- 
2.11.4.GIT