Re: [boost] Feature request for integer.hpp

From: David Seidman (david_i_seidman_at_[hidden])
Date: 2002-05-16 15:51:45

I figured that platform-dependence issues were a
barrier to 64-bit integer support.  I'm not familiar
with Boost's platform philosophy.  In general, is a
feature only supported if it works on every platform? 
Or does Boost insert platform-specific switches to
implement features whenever possible?  64-bitness
seems to be a good general addition to Boost's integer
library, if it's not a great amount of effort. 

Regards,

Dave

--- Daryle Walker <darylew_at_[hidden]> wrote:
> The lack of specializations for 0 and 5 are
> deliberate; we have to trap
> requests larger than a "long" somehow.  To get a
> "long long," we would have
> to conditionally widen the non-implementation gaps. 
> Also, some libraries
> (like CRC) use these types for value-based template
> parameters, and there is
> no guarantee that "long long" can be used that way.
> 
> (You're also assuming the popular mapping 64 bits ->
> "long long" because 32
> bits -> "int" and "long".  A compiler could shift
> "long" to a 64-bit type.)
> 

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