[Insight-developers] So... What platforms DON'T have stdint? (WAS discussion of 64bit niftilib lossage)

[kent williams]

For analyze and NIfTI files, the header HAS to be 348 bytes long, otherwise
it isn't an Analyze/NIfTI file.  In that case, you'd have to read in 348
bytes, and then use offsets + casts to extract individual fields.



On 7/24/07 1:22 PM, "Sean McBride" <sean at rogue-research.com> wrote:

> On 7/24/07 1:07 PM, kent williams said:
> 
>> So... Two questions in the manner of a quick survey:  What platforms have
>> stdint.h?  What platforms (amongst the ITK-supported platforms) do NOT?
> 
> Visual Studio, according to:
> <http://en.wikipedia.org/wiki/Stdint.h#Downloads>
> 
> But there are supposedly 3rd party stdint.h's that can be used in that case.
> 
>> Is it really the case that structure alignment is so undependable that it's
>> necessary to read and write headers a field at a time?
> 
> struct alignment is largely up to the compiler.  Most compilers provide
> #pragmas or other methods of forcing an alignment.  I also recommend reading:
> <http://en.wikipedia.org/wiki/Data_structure_alignment>
> 
> Reading one field at a time can be a performance problem, especially if
> each read generates new disk activity.
>