LEMON/LEMON-official Changeset - r519:d3524090d5e2

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Changeset - r519:d3524090d5e2

« 518:b1ef32
« 512:65f80c

521:51c1d1 »

r519:d3524090d5e2

Fri, 20 Feb 2009 21:51:11

[Not Reviewed]

0 comments (0 inline)

alpar (Alpar Juttner)
alpar@cs.elte.hu

Merge bugfixes #211, #212, #215, #229 and #230

0 11 1

merge 1.0

2 files changed with 244 insertions and 392 deletions:

lemon/config.h.cmake

.hgignore

CMakeLists.txt

configure.ac

lemon/bits/default_map.h

lemon/bits/windows.cc

lemon/config.h.in

lemon/lgf_reader.h

lemon/lgf_writer.h

lemon/path.h

lemon/random.h

lemon/tolerance.h

219

↑ Collapse diff ↑

0 comments (0 inline)

@@ -23,4 +23,5 @@
 		lemon/stamp-h2
 		doc/Doxyfile
 		cmake/cmake.version
 		.dirstamp
 		.libs/*

@@ -24,4 +24,7 @@
 		INCLUDE(FindGhostscript)
 		INCLUDE(CheckTypeSize)
 		CHECK_TYPE_SIZE("long long" LONG_LONG)
 		ENABLE_TESTING()

@@ -25,4 +25,10 @@
 		AC_LANG([C++])
 		dnl Check the existence of long long type.
 		AC_CHECK_TYPE(long long, [long_long_found=yes], [long_long_found=no])
 		if test x"$long_long_found" = x"yes"; then
 		  AC_DEFINE([HAVE_LONG_LONG], [1], [Define to 1 if you have long long.])
 		fi
 		dnl Checks for programs.
 		AC_PROG_CXX
@@ -117,4 +123,6 @@
 		echo C++ compiles flags............ : $CXXFLAGS
 		echo
 		echo Compiler supports long long... : $long_long_found
 		echo
 		#echo GLPK support.................. : $lx_glpk_found
 		#echo CPLEX support................. : $lx_cplex_found

@@ -97,5 +97,5 @@
-		#if defined __GNUC__ && !defined __STRICT_ANSI__
+		#if defined HAVE_LONG_LONG
 		  // long long

@@ -29,5 +29,13 @@
 		#define NOMINMAX
 		#endif
 		#ifdef UNICODE
 		#undef UNICODE
 		#endif
 		#include <windows.h>
 		#ifdef LOCALE_INVARIANT
 		#define MY_LOCALE LOCALE_INVARIANT
 		#else
 		#define MY_LOCALE LOCALE_NEUTRAL
 		#endif
 		#else
 		#include <unistd.h>
@@ -88,25 +96,13 @@
 		      SYSTEMTIME time;
 		      GetSystemTime(&time);
 		#if defined(_MSC_VER) && (_MSC_VER < 1500)
 		      LPWSTR buf1, buf2, buf3;
 		      if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        L"ddd MMM dd", buf1, 11) &&
 		          GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        L"HH':'mm':'ss", buf2, 9) &&
 		          GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        L"yyyy", buf3, 5)) {
 		      char buf1[11], buf2[9], buf3[5];
 			  if (GetDateFormat(MY_LOCALE, 0, &time,
 		                        ("ddd MMM dd"), buf1, 11) &&
 		          GetTimeFormat(MY_LOCALE, 0, &time,
 		                        ("HH':'mm':'ss"), buf2, 9) &&
 		          GetDateFormat(MY_LOCALE, 0, &time,
 		                        ("yyyy"), buf3, 5)) {
 		        os << buf1 << ' ' << buf2 << ' ' << buf3;
+		      }
 		#else
 		      char buf1[11], buf2[9], buf3[5];
 		      if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        "ddd MMM dd", buf1, 11) &&
 		          GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        "HH':'mm':'ss", buf2, 9) &&
 		          GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,
 		                        "yyyy", buf3, 5)) {
 		        os << buf1 << ' ' << buf2 << ' ' << buf3;
+		      }
 		#endif
 		      else os << "unknown";
 		#else

RhodeCode

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	1	#cmakedefine HAVE_LONG_LONG 1
...	...	No newline at end of file

@@ -4,2 +4,5 @@
 		/* Define to 1 if you have GLPK. */
 		#undef HAVE_GLPK
 		/* Define to 1 if you have long long */
 		#undef HAVE_LONG_LONG

@@ -391,35 +391,11 @@
 		  class DigraphReader;
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
 		  /// \relates DigraphReader
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph,
 		                                       std::istream& is = std::cin) {
 		    DigraphReader<Digraph> tmp(digraph, is);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
-		  /// \relates DigraphReader
+		                                       std::istream& is = std::cin);
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph,
 		                                       const std::string& fn) {
 		    DigraphReader<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
 		  /// \relates DigraphReader
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph, const std::string& fn);
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph, const char* fn) {
 		    DigraphReader<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph, const char *fn);
 		  /// \ingroup lemon_io
@@ -585,10 +561,11 @@
 		  private:
 		    friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph,
 		                                                  std::istream& is);
-		    friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph,
+		    template <typename DGR>
 		    friend DigraphReader<DGR> digraphReader(DGR& digraph, std::istream& is);
 		    template <typename DGR>
 		    friend DigraphReader<DGR> digraphReader(DGR& digraph,
 		                                                  const std::string& fn);
 		    friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph,
 		                                                  const char *fn);
 		    template <typename DGR>
 		    friend DigraphReader<DGR> digraphReader(DGR& digraph, const char *fn);
 		    DigraphReader(DigraphReader& other)
@@ -1213,36 +1190,45 @@
 		  };
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
 		  /// \relates DigraphReader
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph, std::istream& is) {
 		    DigraphReader<Digraph> tmp(digraph, is);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
 		  /// \relates DigraphReader
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph,
 		                                       const std::string& fn) {
 		    DigraphReader<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphReader class
 		  ///
 		  /// This function just returns a \ref DigraphReader class.
 		  /// \relates DigraphReader
 		  template <typename Digraph>
 		  DigraphReader<Digraph> digraphReader(Digraph& digraph, const char* fn) {
 		    DigraphReader<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  template <typename Graph>
 		  class GraphReader;
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
 		  /// \relates GraphReader
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, std::istream& is = std::cin) {
 		    GraphReader<Graph> tmp(graph, is);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
-		  /// \relates GraphReader
+		  GraphReader<Graph> graphReader(Graph& graph,
 		                                 std::istream& is = std::cin);
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, const std::string& fn) {
 		    GraphReader<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
-		  /// \relates GraphReader
+		  GraphReader<Graph> graphReader(Graph& graph, const std::string& fn);
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, const char* fn) {
 		    GraphReader<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  GraphReader<Graph> graphReader(Graph& graph, const char *fn);
 		  /// \ingroup lemon_io
@@ -1371,8 +1357,10 @@
 		  private:
 		    friend GraphReader<Graph> graphReader<>(Graph& graph, std::istream& is);
 		    friend GraphReader<Graph> graphReader<>(Graph& graph,
 		                                            const std::string& fn);
 		    friend GraphReader<Graph> graphReader<>(Graph& graph, const char *fn);
 		    template <typename GR>
 		    friend GraphReader<GR> graphReader(GR& graph, std::istream& is);
 		    template <typename GR>
 		    friend GraphReader<GR> graphReader(GR& graph, const std::string& fn);
 		    template <typename GR>
 		    friend GraphReader<GR> graphReader(GR& graph, const char *fn);
 		    GraphReader(GraphReader& other)
@@ -2045,4 +2033,34 @@
 		  };
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
 		  /// \relates GraphReader
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, std::istream& is) {
 		    GraphReader<Graph> tmp(graph, is);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
 		  /// \relates GraphReader
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, const std::string& fn) {
 		    GraphReader<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphReader class
 		  ///
 		  /// This function just returns a \ref GraphReader class.
 		  /// \relates GraphReader
 		  template <typename Graph>
 		  GraphReader<Graph> graphReader(Graph& graph, const char* fn) {
 		    GraphReader<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  class SectionReader;

@@ -351,36 +351,15 @@
 		  class DigraphWriter;
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
 		  /// \relates DigraphWriter
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       std::ostream& os = std::cout) {
 		    DigraphWriter<Digraph> tmp(digraph, os);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
-		  /// \relates DigraphWriter
+		                                       std::ostream& os = std::cout);
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       const std::string& fn) {
 		    DigraphWriter<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		                                       const std::string& fn);
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
 		  /// \relates DigraphWriter
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       const char* fn) {
 		    DigraphWriter<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		                                       const char* fn);
 		  /// \ingroup lemon_io
@@ -527,9 +506,12 @@
 		  private:
-		    friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph,
+		    template <typename DGR>
 		    friend DigraphWriter<DGR> digraphWriter(const DGR& digraph,
 		                                                  std::ostream& os);
-		    friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph,
+		    template <typename DGR>
 		    friend DigraphWriter<DGR> digraphWriter(const DGR& digraph,
 		                                                  const std::string& fn);
-		    friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph,
+		    template <typename DGR>
 		    friend DigraphWriter<DGR> digraphWriter(const DGR& digraph,
 		                                                  const char *fn);
@@ -934,37 +916,47 @@
 		  };
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
 		  /// \relates DigraphWriter
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       std::ostream& os) {
 		    DigraphWriter<Digraph> tmp(digraph, os);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
 		  /// \relates DigraphWriter
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       const std::string& fn) {
 		    DigraphWriter<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref DigraphWriter class
 		  ///
 		  /// This function just returns a \ref DigraphWriter class.
 		  /// \relates DigraphWriter
 		  template <typename Digraph>
 		  DigraphWriter<Digraph> digraphWriter(const Digraph& digraph,
 		                                       const char* fn) {
 		    DigraphWriter<Digraph> tmp(digraph, fn);
 		    return tmp;
+		  }
 		  template <typename Graph>
 		  class GraphWriter;
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
 		  /// \relates GraphWriter
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph,
 		                                 std::ostream& os = std::cout) {
 		    GraphWriter<Graph> tmp(graph, os);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
-		  /// \relates GraphWriter
+		                                 std::ostream& os = std::cout);
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph, const std::string& fn) {
 		    GraphWriter<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
-		  /// \relates GraphWriter
+		  GraphWriter<Graph> graphWriter(const Graph& graph, const std::string& fn);
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph, const char* fn) {
 		    GraphWriter<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  GraphWriter<Graph> graphWriter(const Graph& graph, const char* fn);
 		  /// \ingroup lemon_io
@@ -1082,9 +1074,12 @@
 		  private:
-		    friend GraphWriter<Graph> graphWriter<>(const Graph& graph,
+		    template <typename GR>
 		    friend GraphWriter<GR> graphWriter(const GR& graph,
 		                                            std::ostream& os);
-		    friend GraphWriter<Graph> graphWriter<>(const Graph& graph,
+		    template <typename GR>
 		    friend GraphWriter<GR> graphWriter(const GR& graph,
 		                                            const std::string& fn);
-		    friend GraphWriter<Graph> graphWriter<>(const Graph& graph,
+		    template <typename GR>
 		    friend GraphWriter<GR> graphWriter(const GR& graph,
 		                                            const char *fn);
@@ -1535,4 +1530,35 @@
 		  };
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
 		  /// \relates GraphWriter
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph,
 		                                 std::ostream& os) {
 		    GraphWriter<Graph> tmp(graph, os);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
 		  /// \relates GraphWriter
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph, const std::string& fn) {
 		    GraphWriter<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  /// \brief Return a \ref GraphWriter class
 		  ///
 		  /// This function just returns a \ref GraphWriter class.
 		  /// \relates GraphWriter
 		  template <typename Graph>
 		  GraphWriter<Graph> graphWriter(const Graph& graph, const char* fn) {
 		    GraphWriter<Graph> tmp(graph, fn);
 		    return tmp;
+		  }
 		  class SectionWriter;

@@ -930,7 +930,6 @@
 		    template <typename Target, typename Source,
 		              bool buildEnable = BuildTagIndicator<Target>::value,
 		              bool revEnable = RevPathTagIndicator<Source>::value>
-		    struct PathCopySelector {
+		              bool buildEnable = BuildTagIndicator<Target>::value>
 		    struct PathCopySelectorForward {
 		      static void copy(Target& target, const Source& source) {
 		        target.clear();
@@ -942,15 +941,5 @@
 		    template <typename Target, typename Source>
 		    struct PathCopySelector<Target, Source, false, true> {
 		      static void copy(Target& target, const Source& source) {
 		        target.clear();
 		        for (typename Source::RevArcIt it(source); it != INVALID; ++it) {
 		          target.addFront(it);
+		        }
+		      }
 		    };
 		    template <typename Target, typename Source>
-		    struct PathCopySelector<Target, Source, true, false> {
+		    struct PathCopySelectorForward<Target, Source, true> {
 		      static void copy(Target& target, const Source& source) {
 		        target.clear();
@@ -959,6 +948,17 @@
 		    };
 		    template <typename Target, typename Source,
 		              bool buildEnable = BuildTagIndicator<Target>::value>
 		    struct PathCopySelectorBackward {
 		      static void copy(Target& target, const Source& source) {
 		        target.clear();
 		        for (typename Source::RevArcIt it(source); it != INVALID; ++it) {
 		          target.addFront(it);
+		        }
+		      }
 		    };
 		    template <typename Target, typename Source>
-		    struct PathCopySelector<Target, Source, true, true> {
+		    struct PathCopySelectorBackward<Target, Source, true> {
 		      static void copy(Target& target, const Source& source) {
 		        target.clear();
@@ -967,4 +967,20 @@
 		    };
 		    template <typename Target, typename Source,
 		              bool revEnable = RevPathTagIndicator<Source>::value>
 		    struct PathCopySelector {
 		      static void copy(Target& target, const Source& source) {
 		        PathCopySelectorForward<Target, Source>::copy(target, source);
+		      }
 		    };
 		    template <typename Target, typename Source>
 		    struct PathCopySelector<Target, Source, true> {
 		      static void copy(Target& target, const Source& source) {
 		        PathCopySelectorBackward<Target, Source>::copy(target, source);
+		      }
 		    };
+		  }

@@ -345,19 +345,9 @@
 		    };
-		    template <typename Result, int exp, bool pos = (exp >= 0)>
 		    template <typename Result, int exp>
 		    struct ShiftMultiplier {
 		      static const Result multiplier() {
 		        Result res = ShiftMultiplier<Result, exp / 2>::multiplier();
 		        res *= res;
 		        if ((exp & 1) == 1) res *= static_cast<Result>(2.0);
 		        return res;
+		      }
 		    };
 		    template <typename Result, int exp>
 		    struct ShiftMultiplier<Result, exp, false> {
 		      static const Result multiplier() {
 		        Result res = ShiftMultiplier<Result, exp / 2>::multiplier();
 		        res *= res;
 		        if ((exp & 1) == 1) res *= static_cast<Result>(0.5);
 		        return res;
@@ -366,5 +356,5 @@
 		    template <typename Result>
-		    struct ShiftMultiplier<Result, 0, true> {
 		    struct ShiftMultiplier<Result, 0> {
 		      static const Result multiplier() {
 		        return static_cast<Result>(1.0);
@@ -373,5 +363,5 @@
 		    template <typename Result>
-		    struct ShiftMultiplier<Result, -20, true> {
 		    struct ShiftMultiplier<Result, 20> {
 		      static const Result multiplier() {
 		        return static_cast<Result>(1.0/1048576.0);
@@ -380,12 +370,12 @@
 		    template <typename Result>
-		    struct ShiftMultiplier<Result, -32, true> {
 		    struct ShiftMultiplier<Result, 32> {
 		      static const Result multiplier() {
-		        return static_cast<Result>(1.0/424967296.0);
+		        return static_cast<Result>(1.0/4294967296.0);
+		      }
 		    };
 		    template <typename Result>
-		    struct ShiftMultiplier<Result, -53, true> {
 		    struct ShiftMultiplier<Result, 53> {
 		      static const Result multiplier() {
 		        return static_cast<Result>(1.0/9007199254740992.0);
@@ -394,5 +384,5 @@
 		    template <typename Result>
-		    struct ShiftMultiplier<Result, -64, true> {
 		    struct ShiftMultiplier<Result, 64> {
 		      static const Result multiplier() {
 		        return static_cast<Result>(1.0/18446744073709551616.0);
@@ -414,5 +404,5 @@
 		      static Result convert(RandomCore<Word>& rnd) {
-		        return Shifting<Result, - shift - rest>::
+		        return Shifting<Result, shift + rest>::
 		          shift(static_cast<Result>(rnd() >> (bits - rest)));
+		      }
@@ -424,5 +414,5 @@
 		      static Result convert(RandomCore<Word>& rnd) {
-		        return Shifting<Result, - shift - bits>::
+		        return Shifting<Result, shift + bits>::
 		          shift(static_cast<Result>(rnd())) +
 		          RealConversion<Result, Word, rest-bits, shift + bits>::

@@ -39,6 +39,7 @@
 		  ///as a result of a probably inexact computation.
 		  ///
 		  ///This is an abstract class, it should be specialized for all
 		  ///numerical data types. These specialized classes like
 		  ///The general implementation is suitable only if the data type is exact,
 		  ///like the integer types, otherwise a specialized version must be
 		  ///implemented. These specialized classes like
 		  ///Tolerance<double> may offer additional tuning parameters.
 		  ///
@@ -46,8 +47,4 @@
 		  ///\sa Tolerance<double>
 		  ///\sa Tolerance<long double>
 		  ///\sa Tolerance<int>
 		  ///\sa Tolerance<long long int>
 		  ///\sa Tolerance<unsigned int>
 		  ///\sa Tolerance<unsigned long long int>
 		  template<class T>
@@ -65,18 +62,18 @@
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
-		    static bool less(Value a,Value b) {return false;}
+		    static bool less(Value a,Value b) {return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
-		    static bool different(Value a,Value b) {return false;}
+		    static bool different(Value a,Value b) {return a!=b;}
 		    ///Returns \c true if \c a is \e surely positive
-		    static bool positive(Value a) {return false;}
+		    static bool positive(Value a) {return static_cast<Value>(0) < a;}
 		    ///Returns \c true if \c a is \e surely negative
-		    static bool negative(Value a) {return false;}
+		    static bool negative(Value a) {return a < static_cast<Value>(0);}
 		    ///Returns \c true if \c a is \e surely non-zero
-		    static bool nonZero(Value a) {return false;}
+		    static bool nonZero(Value a) {return a != static_cast<Value>(0);}
 		    ///@}
 		    ///Returns the zero value.
-		    static Value zero() {return T();}
+		    static Value zero() {return static_cast<Value>(0);}
 		    //   static bool finite(Value a) {}
@@ -239,211 +236,4 @@
 		  };
 		  ///Integer specialization of Tolerance.
 		  ///Integer specialization of Tolerance.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<int>
+		  {
 		  public:
 		    ///\e
 		    typedef int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value a) { return 0>a; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0; }
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		  ///Unsigned integer specialization of Tolerance.
 		  ///Unsigned integer specialization of Tolerance.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<unsigned int>
+		  {
 		  public:
 		    ///\e
 		    typedef unsigned int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value) { return false; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0; }
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		  ///Long integer specialization of Tolerance.
 		  ///Long integer specialization of Tolerance.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<long int>
+		  {
 		  public:
 		    ///\e
 		    typedef long int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value a) { return 0>a; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0;}
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		  ///Unsigned long integer specialization of Tolerance.
 		  ///Unsigned long integer specialization of Tolerance.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<unsigned long int>
+		  {
 		  public:
 		    ///\e
 		    typedef unsigned long int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value) { return false; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0;}
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		#if defined __GNUC__ && !defined __STRICT_ANSI__
 		  ///Long long integer specialization of Tolerance.
 		  ///Long long integer specialization of Tolerance.
 		  ///\warning This class (more exactly, type <tt>long long</tt>)
 		  ///is not ansi compatible.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<long long int>
+		  {
 		  public:
 		    ///\e
 		    typedef long long int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value a) { return 0>a; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0;}
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		  ///Unsigned long long integer specialization of Tolerance.
 		  ///Unsigned long long integer specialization of Tolerance.
 		  ///\warning This class (more exactly, type <tt>unsigned long long</tt>)
 		  ///is not ansi compatible.
 		  ///\sa Tolerance
 		  template<>
 		  class Tolerance<unsigned long long int>
+		  {
 		  public:
 		    ///\e
 		    typedef unsigned long long int Value;
 		    ///\name Comparisons
 		    ///See \ref lemon::Tolerance "Tolerance" for more details.
 		    ///@{
 		    ///Returns \c true if \c a is \e surely strictly less than \c b
 		    static bool less(Value a,Value b) { return a<b;}
 		    ///Returns \c true if \c a is \e surely different from \c b
 		    static bool different(Value a,Value b) { return a!=b; }
 		    ///Returns \c true if \c a is \e surely positive
 		    static bool positive(Value a) { return 0<a; }
 		    ///Returns \c true if \c a is \e surely negative
 		    static bool negative(Value) { return false; }
 		    ///Returns \c true if \c a is \e surely non-zero
 		    static bool nonZero(Value a) { return a!=0;}
 		    ///@}
 		    ///Returns zero
 		    static Value zero() {return 0;}
 		  };
 		#endif
 		  /// @}