/home/coin/SVN-release/Bcp-1.2.1/CoinUtils/src/CoinFinite.hpp

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00001 // Copyright (C) 2002, International Business Machines
00002 // Corporation and others.  All Rights Reserved.
00003 
00004 // Also put all base defines here e.g. VC++ pragmas
00005 #ifndef CoinFinite_H
00006 #define CoinFinite_H
00007 
00008 #include "CoinUtilsConfig.h"
00009 
00010 #include <cstdlib>
00011 #ifdef HAVE_CMATH
00012 # include <cmath>
00013 #else
00014 # ifdef HAVE_MATH_H
00015 #  include <math.h>
00016 # else
00017 #  error "don't have header file for math"
00018 # endif
00019 #endif
00020 
00021 #ifdef HAVE_CFLOAT
00022 # include <cfloat>
00023 #else
00024 # ifdef HAVE_FLOAT_H
00025 #  include <float.h>
00026 # endif
00027 #endif
00028 
00029 #ifdef HAVE_CIEEEFP
00030 # include <cieeefp>
00031 #else
00032 # ifdef HAVE_IEEEFP_H
00033 #  include <ieeefp.h>
00034 # endif
00035 #endif
00036 
00037 #include <algorithm>
00038 
00039 //=============================================================================
00040 // Compilers can produce better code if they know about __restrict
00041 #ifdef COIN_USE_RESTRICT
00042 #define COIN_RESTRICT __restrict
00043 #else
00044 #define COIN_RESTRICT 
00045 #endif
00046 //=============================================================================
00047 // Switch on certain things if COIN_FAST_CODE
00048 #ifdef COIN_FAST_CODE
00049 #ifndef COIN_NOTEST_DUPLICATE
00050 #define COIN_NOTEST_DUPLICATE
00051 #endif
00052 #ifndef COIN_USE_EKK_SORT
00053 #define COIN_USE_EKK_SORT
00054 #endif
00055 #endif
00056 //=============================================================================
00057 #if COIN_BIG_INDEX==0
00058 typedef int CoinBigIndex;
00059 #elif COIN_BIG_INDEX==1
00060 typedef long CoinBigIndex;
00061 #else
00062 typedef long long CoinBigIndex;
00063 #endif
00064 
00065 //=============================================================================
00066 // Plus infinity (double and int)
00067 #ifndef COIN_DBL_MAX
00068 #define COIN_DBL_MAX DBL_MAX
00069 #endif
00070 
00071 #ifndef COIN_INT_MAX
00072 #define COIN_INT_MAX ((int)((~((unsigned int)0)) >> 1))
00073 #endif
00074 
00075 //=============================================================================
00076 
00077 #if defined(_MSC_VER)
00078 //  # define CoinIsnan   _isnan
00079 //  # define CoinFinite  _finite
00080 // Turn off compiler warning about long names
00081 #  pragma warning(disable:4786)
00082 #if !defined(min)
00083 #define min(a,b)  (((a) < (b)) ? (a) : (b))
00084 #endif
00085 #if !defined(max)
00086 #define max(a,b)  (((a) > (b)) ? (a) : (b))
00087 #endif
00088 #else
00089 // Put standard min and max here
00090 using std::min;
00091 using std::max;
00092 #endif
00093 
00094 //=============================================================================
00095 
00096 inline bool CoinFinite(double val)
00097 {
00098 #ifdef MY_C_FINITE
00099   //    return static_cast<bool>(MY_C_FINITE(val));
00100     return MY_C_FINITE(val)!=0;
00101 #else
00102     return val != DBL_MAX && val != -DBL_MAX;
00103 #endif
00104 }
00105 
00106 //=============================================================================
00107 
00108 inline bool CoinIsnan(double val)
00109 {
00110 #ifdef MY_C_ISNAN
00111   //    return static_cast<bool>(MY_C_ISNAN(val));
00112     return MY_C_ISNAN(val)!=0;
00113 #else
00114     return false;
00115 #endif
00116 }
00117 
00118 //=============================================================================
00119 
00120 #endif

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