uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Ankit Jain]

if somebody can tell me what attribute is aligned here

 uint8_t  mean8[8] __attribute__ ((aligned (32))),
*mp;

thanks

ankit jain

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uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Ankit Jain]

if somebody can tell me what this __attribute__ is
doing

what kind of alignement is this

 uint8_t  mean8[8] __attribute__ ((aligned (32))),
*mp;


thanks

ankit jain

________________________________________________________________________
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uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Ankit Jain]

if somebody can tell me what this __attribute__ is
doing

what kind of alignement is this

 uint8_t  mean8[8] __attribute__ ((aligned (32))),
*mp;


thanks

ankit jain

________________________________________________________________________
Yahoo! Messenger - Communicate instantly..."Ping" 
your friends today! Download Messenger Now 
http://uk.messenger.yahoo.com/download/index.html

Re: uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Glynn Clements]

Ankit Jain wrote:

> if somebody can tell me what attribute is aligned here
> 
>  uint8_t  mean8[8] __attribute__ ((aligned (32))),
> *mp;

The start of the array mean8 will be aligned to a 32-byte boundary.

-- 
Glynn Clements <glynn@gclements.plus.com>

Re: uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Manish Regmi]

On Fri, 26 Nov 2004 18:40:15 +0000 (GMT), Ankit Jain
<ankitjain1580@yahoo.com> wrote:
> if somebody can tell me what this __attribute__ is
> doing
> 
> what kind of alignement is this
> 
> uint8_t  mean8[8] __attribute__ ((aligned (32))),
> *mp;
> 
> thanks
> 
> ankit jain
> 

__attribute__ and aligned()  are a gcc builtin.

aligned(32) generates 32 byte aligned address. so that data is stored
on 32 byte aligned address.

This is done for performance reasons. 

see gcc manual for more details.

regards manish

-- 
Manish Regmi
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Re: uint8_t mean8[8] __attribute__ ((aligned (32))), *mp;

[Jan-Benedict Glaw]

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On Fri, 2004-11-26 06:18:31 +0000, Ankit Jain <ankitjain1580@yahoo.com>
wrote in message <20041126061831.5905.qmail@web52903.mail.yahoo.com>:
> if somebody can tell me what attribute is aligned here
> 
>  uint8_t  mean8[8] __attribute__ ((aligned (32))),
> *mp;

gcc's info page tells that the mean8[] array will start at a byte that
can be devided by 32.

MfG, JBG

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