18.11.2015, 17:29, "Anton D. Kachalov" <mouse@xxxxxxxxxxxxxx>:
> Hi.
>
>
> struct {
> uint16_t foo;
> uint32_t bar;
> }
>
> What alignment would be on "bar" access (ptr address input for read_uint32)?
This might work:
uint32_t read_uint32(uint8_t *ptr) {
return ptr[3] << 24 | ... | ptr[0];
}
but question in the byte-access overhead code versus memcpy code.
>
> May be better to use memcpy? It is align-safe.
memcpy should be definitely better choice for float/double reads/writes. Meanwhile, current protocol doesn't have such fields' types.
--
Anton D. Kachalov
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