Re: [boost] BOOST_NO_INTRINSIC_INT64_T

Subject: Re: [boost] BOOST_NO_INTRINSIC_INT64_T
From: Robert Ramey (ramey_at_[hidden])
Date: 2009-03-25 16:47:13

here it what I use it for:

I have a class which has a member function for each type. e.g.

    #if BOOST_HAS_LONG_LONG
    save(long long);
    #endif
    save(uint_64);  // compiler error iif uint_64 is only a typedef for long 
long)

so I think I want to be able to say

    #if BOOST_HAS_LONG_LONG
    save(long long);
    #endif
    #if BOOST_HAS_INT64 &&  BOOST_INSTRINSIC_INT64
    save(uint_64);  // OK
    #endif

Robert Ramey

John Maddock wrote:
> Robert,
>
> What is it that you actually want to know?
>
> Normally folks will:
>
> * Deal with short, int, long etc and then:
> * Deal with long long if BOOST_HAS_LONG_LONG is defined.
> * Or else deal with __int64 if BOOST_HAS_MS_INT64 is defined.
>
> The alternative is to:
>
> Deal with each int16_t, int32_t etc and then
> Deal with int64_t if BOOST_NO_INT64_T is not defined.
>
> Mixing the two approaches is what causes the problems :-)
>
> So... do you serialize by type or by width?
>
> HTH, John.
>
>
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