1<HTML> 2<!-- 3 Copyright (c) Jeremy Siek 2002 4 5 Distributed under the Boost Software License, Version 1.0. 6 (See accompanying file LICENSE_1_0.txt or copy at 7 http://www.boost.org/LICENSE_1_0.txt) 8 --> 9<Head> 10<Title>Boost Graph Library: Exceptions</Title> 11<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" 12 ALINK="#ff0000"> 13<IMG SRC="../../../boost.png" 14 ALT="C++ Boost" width="277" height="86"> 15 16<BR Clear> 17 18<h1><a href="../../../boost/graph/exception.hpp"><tt>boost/graph/exception.hpp</tt></a></h1> 19 20<P> 21The BGL defines several exception classes for reporting errors from 22BGL algorithms. Many of the BGL algorithms place certain requirements 23on the input graph. If these requirements are not met then the 24algorithm can not successfully complete, and instead throws the 25appropriate exception. 26</P> 27 28<h3>Synopsis</h3> 29 30<pre> 31 struct <a name="bad_graph">bad_graph</a> : public invalid_argument { 32 bad_graph(const string& what_arg); 33 }; 34 struct <a name="not_a_dag">not_a_dag</a> : public bad_graph { 35 not_a_dag(); 36 }; 37 struct <a name="negative_edge">negative_edge</a> : public bad_graph { 38 negative_edge(); 39 }; 40 struct <a name="negative_cycle">negative_cycle</a> : public bad_graph { 41 negative_cycle(); 42 }; 43 struct <a name="not_connected">not_connected</a> : public bad_graph { 44 not_connected(); 45 }; 46</pre> 47