cochran_emc.h: packed structs
Thiago Macieira
thiago at macieira.org
Tue Oct 28 11:29:48 PDT 2014
On Tuesday 28 October 2014 09:34:33 Dirk Hohndel wrote:
> On Tue, Oct 28, 2014 at 09:28:31AM -0700, Thiago Macieira wrote:
> > Are we sure of the sample size? It's an odd number of bytes...
>
> We have dive computers with non-constant sample sizes. And pretty much any
> random number you can think of. Yes, 8 is common, as are 12 or 16.
8, 12, 16, 24, 32, 64 are fine.
uemis_sample_t is 37 (0x25) bytes in size with the packing and is used like
this:
/* first byte of divelog data is at offset 0x123 */
i = 0x123;
u_sample = (uemis_sample_t *)(data + i);
while ((i < datalen) && (u_sample->dive_time)) {
[...]
i += 0x25;
u_sample++;
}
Given the i += 0x25, it seems that the size is as intended.
--
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
More information about the subsurface
mailing list