On Sun, May 03, 2015 at 09:02:55PM +0100, Will Godfrey wrote:
For arrays of bool, GCC uses a char for each bool.
Ouch! that could get expensive - although I doubt it will ever be an issue for
me. Certainly worth remembering though.
It's a reasonable compromise. Very few application fields
On Sat, 2 May 2015 20:53:15 +
Fons Adriaensen f...@linuxaudio.org wrote:
On Sat, May 02, 2015 at 08:57:25PM +0100, Will Godfrey wrote:
What masking?
Presumably bits have to be masked when being set or read to provide the
boolean
action. I wouldn't expect true single bit direct
* Will Godfrey:
Just a curious thought...
If you are using only small values is there really any benefit in
using chars and shorts rather than just using integers everywhere
and letting the compiler sort it out?
Many languages do not actually support arithmetic on chars and shorts,
but
On Sun, 03 May 2015 21:36:25 +0200
Florian Weimer f...@deneb.enyo.de wrote:
* Will Godfrey:
Just a curious thought...
If you are using only small values is there really any benefit in
using chars and shorts rather than just using integers everywhere
and letting the compiler sort it
Will Godfrey wrote:
If you are using only small values is there really any benefit in using chars
and shorts rather than just using integers everywhere and letting the compiler
sort it out?
That depends on the CPU architecture.
Which is why stdint.h defines types like int16_fast_t.
Also,
Just a curious thought...
If you are using only small values is there really any benefit in using chars
and shorts rather than just using integers everywhere and letting the compiler
sort it out?
Also, would bool actually have an extra cost due to masking needs?
Obviously large blocks of data
On Sat, May 02, 2015 at 08:57:25PM +0100, Will Godfrey wrote:
What masking?
Presumably bits have to be masked when being set or read to provide the
boolean
action. I wouldn't expect true single bit direct storage to be available.
No, the compiler will use one of the available int sizes
On Sat, 02 May 2015 21:06:40 +0200
Clemens Ladisch clem...@ladisch.de wrote:
Will Godfrey wrote:
If you are using only small values is there really any benefit in using
chars
and shorts rather than just using integers everywhere and letting the
compiler
sort it out?
That depends
