cochran_emc.h: packed structs

[Thiago Macieira]

On Tuesday 28 October 2014 09:32:17 Dirk Hohndel wrote:
> A typical 8 byte sample might look like this:
> 
> struct sample {
>         unsigned char temp; // in F
>         unsigned int16_t depth; // in 1/16 ft
>         unsigned int16_t deco : 1;
>         unsigned int16_t tank_idx : 2;
>         unsigned int16_t marker : 1;
>         unsigned int16_t ascend_warn : 1;
>         unsigned int16_t compass : 9;
>         unsigned int16_t pressure; // in psi
>         unsigned char flags;
> }
> 
> I made this up - it's much simpler than some real structures actually are.

Yep, I get it. But without the packing, there's a 1-byte hole between temp and 
the depth, then one byte tail-padding at the end of the structure.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358