[fpc-pascal] struct definition in C

[Luca Olivetti]

El 23/03/14 19:39, Darius Blaszyk ha escrit:
> Hi,
> 
> What would be the equivalent of the following struct definition in C?
> 
> typedef struct MyStruct
> {
>  unsigned a :6;
>  unsigned b :15;
>  unsigned c:11;
> }MyStruct;  
> 
> I imagine this is some sort of struct initialization. Is thi spossible
> in FPC as well, or what is the best alternative?

h2pas translates it to a record with associated setters/getters for each
field.

You could also try with bitpacked records, i.e.

type MyStruct = bitpacked record
    a:0..(1 shl 6)-1;
    b:0..(1 shl 15)-1;
    c:0..(1 shl 11)-1;
end;

but, as Jonas said, it't not guaranteed to work (in practice it works
with win32/linux 32 and linux 64, though it could break with a different
version of the compiler).

Bye
-- 
Luca