From d09b80178a791b5f760f10ddc36ac88d4119d047 Mon Sep 17 00:00:00 2001
From: jiri <jiri>
Date: Fri, 22 Jun 2007 14:46:03 +0000
Subject: [PATCH] *** empty log message ***

---
 mat.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mat.cc b/mat.cc
index cd46da6..1c6fb2f 100644
--- a/mat.cc
+++ b/mat.cc
@@ -22,6 +22,9 @@ extern ssize_t write(int, const void *, size_t);
 template <typename T>
 const NRMat<T> NRMat<T>::oplus(const NRMat<T> &rhs) const
 {
+if(nn==0 && mm == 0) return rhs;
+if(rhs.nn==0 && rhs.mm== 0) return *this;
+
 NRMat<T> r((T)0,nn+rhs.nn,mm+rhs.mm);
 
 #ifdef oldversion
@@ -44,6 +47,9 @@ return r;
 template <typename T>
 const NRMat<T> NRMat<T>::otimes(const NRMat<T> &rhs) const
 {
+if(nn==0 && mm == 0) return *this;
+if(rhs.nn==0 && rhs.mm== 0) return rhs;
+
 NRMat<T> r((T)0,nn*rhs.nn,mm*rhs.mm);
 
 int i,j,k,l;