Dear Alessandro Rubini,
In message <20091008074114.ga30...@mail.gnudd.com> you wrote:
>
> Since int is 32 also on 64bit systems, I used unsigned long.
Note that this is not guaranteed, though. It could be 64 bit as well.
> /* do it one word at a time (32 bits or 64 bits) if possible */
> if ( ((count | (int)s) & (sizeof(long) - 1)) == 0) {
> count /= sizeof(long);
> cl = (c & 0xff) | ((c & 0xff) << 8);
> cl |= cl << 16;
> if (sizeof(long) > 4)
> cl |= cl << 32;
How about:
cl = 0;
for (i=0; i<sizeof(long); ++i) {
cl <<= 8;
cl |= c & 0xff;
}
GCC optimization will do the rest...
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
If I don't document something, it's usually either for a good reason,
or a bad reason. In this case it's a good reason. :-)
- Larry Wall in <1992jan17.005405.16...@netlabs.com>
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