Hello,
2012/5/19 Vadim Zeitlin <[email protected]>
> Below is an improved patch which does the same thing portably, it's based
> on the same idea as Michael Evdokimov's proposal in the above thread but
> not strictly identical to it.
>
> +// long must be mapped either to x_integer or x_long_long:
> +template<int long_size> struct long_traits_helper;
> +template<> struct long_traits_helper<4> { enum { x_type = x_integer }; };
> +template<> struct long_traits_helper<8> { enum { x_type = x_long_long };
> };
> +
> template <>
> struct exchange_traits<long int>
> {
> typedef basic_type_tag type_family;
> - enum { x_type = x_integer };
> + enum { x_type = long_traits_helper<sizeof(long int)>::x_type };
> };
> -#endif // #if defined (__LP64__) || ( __WORDSIZE == 64 )
>
> template <>
> struct exchange_traits<double>
> --
>
That seems very elegant (and more robust) to me.
+1
Denis
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