utils.h

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#ifndef UTILS_Q7Z8RACX
#define UTILS_Q7Z8RACX


#include <utility>
using namespace std;

#include <cppapp/cppapp.h>


#ifdef NDEBUG
#       define safeAdd(a, b) ((a) + (b))
#       define safeMul(a, b) ((a) * (b))
#else
template<class T>
T safeAdd(T a, T b)
{
        T c = a + b;
        
        if (b > 0 ? c < a : c > a) {
                LOG_ERROR("Addition overflow: " << a << " + " << b << " = " << c);
        }
        
        return c;
}

template<class T>
T safeMul(T a, T b)
{
        T c = a * b;
        
        return c;
}
#endif


template<class T>
pair<T, T> orderPair(T a, T b)
{
        if (a > b)
                return make_pair(b, a);
        return make_pair(a, b);
}


#define ORDER_PAIR(a, b) { \
        if ((a) > (b)) { \
                VAR(temp__, (a)); \
                (a) = (b); \
                (b) = temp__; \
        } \
}


#endif /* end of include guard: UTILS_Q7Z8RACX */