Distinguishing integer from floating point types in a template

Question

I\'d like to perform similar, but not identical computations for several integer types (16, 32, 64 bits) and floating point types (float, double, long double). Most of the code

Answer 1

With C++11 it is possible to use type traits. See std::enable_if documentation In your case, it might look like this:

Function parameter specialization:

template
bool isEqual(T a, T b, typename std::enable_if::value >::type* = 0) 
{
    return a == b;
}

template
bool isEqual(T a, T b, typename std::enable_if::value >::type* = 0) 
{
    return abs( a - b ) < epsilon;
}

Return type specialization:

template
typename std::enable_if::value, bool >::type isEqual(T a, T b)

{
    return a == b;
}

template
typename std::enable_if::value, bool >::type isEqual(T a, T b)
{
    return abs( a - b ) < epsilon;
}