Convert UINT64 to double (MSVC6)
Posted on 2004-09-15
MSVC6 can not internally convert unsigned __int64 to double. However, VC.NET 2003 (among others) can do the conversion. In addition GCC for Intel Architectures can internally convert unsigned long long, also 64-bit unsigned integer, to double.
Does anyone have a good work-around for MSVC6? I'm using the code snippet shown below, but I find it unsatisfactory. First of all, the code does not use the full range, since for MSVC6 there is a conversion to signed 64-bit integer, and also the snippet is ugly and disturbs the more 'normal' use of static_cast<double>(UINT64 u64). Is it possible to make a template specialization for static_cast<double>(UINT64 u64) specifically for MSVC6? Alternatively, does anyone know the compiler intrinsic mathematics for the proper conversion of UINT64 to double so that I can at least correct my code snippet?
Thanks for your help.
inline double UINT64_to_double(const UINT64& u)
#if defined (_MSC_VER) && (_MSC_VER <= 1200)