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

[Sean McBride]

On 7/24/07 1:22 PM, kent williams said:

>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.

A portable solution would be something like this:

// Set up structure packing for all supported compilers
#if defined(__GNUC__)
  #define START_FORCE_STRUCT_PACKING #pragma pack(1)
  #define END_FORCE_STRUCT_PACKING #pragma pack()
#elif defined(_MSC_VER)
  // something else
#else // other compilers
  #error todo
#endif

#include <stdint.h>

START_FORCE_STRUCT_PACKING

struct
{
  uint8_t   field1;
  int32_t   field2;
  uint16_t  field3;
  // etc.
};

END_FORCE_STRUCT_PACKING

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada