Dear All：
1 I found some placeuse two !!, what's means
if(button-gpio != INVALID_GPIO)
state = !!((gpio_get_value(button-gpio) ? 1 : 0) ^ button-active_low);
else
state = !!button-adc_state;
2 is there some MSN group to study linux kernel or discuss it ?
Thanks and
!! is generally used to make the return bool value.
You can use kernelnewbies and linux kernel mailing list.
On Mon, Apr 1, 2013 at 12:43 PM, Ben Wu cray...@yahoo.cn wrote:
Dear All：
1 I found some placeuse two !!, what's means
if(button-gpio != INVALID_GPIO)
state =
Dear All：
1 I found some placeuse two !!, what's means
if(button-gpio != INVALID_GPIO)
state = !!((gpio_get_value(button-gpio) ? 1 : 0) ^ button-active_low);
else
state = !!button-adc_state;
2 is there some MSN group to study linux kernel or discuss it ?
Thanks and Best
On Mon, 01 Apr 2013 15:10:46 +0800, Ben Wu said:
1 I found some placeuse two !!, what's means
if(button-gpio != INVALID_GPIO)
state = !!((gpio_get_value(button-gpio) ? 1 : 0) ^
button-active_low);
else
Gaah. That line of code fell out of the ugly tree and hit every branch
on
Ben Wu writes:
Dear All：
1 I found some placeuse two !!, what's means
if(button-gpio != INVALID_GPIO)
state = !!((gpio_get_value(button-gpio) ? 1 : 0) ^ button-active_low);
else
state = !!button-adc_state;
if a = 1010011 then
!a = 0 and
!!a = 1
if a = 00 then
!a = 1
!! = 0
On Mon, Apr 01, 2013 at 03:13:06PM +0800, Ben Wu wrote:
2 is there some MSN group to study linux kernel or discuss it ?
MSN:cray...@yahoo.cn
You seem to have a strange notion of MSN. I guess you don't mean
Microsoft Network (which really is what MSN means much of the time),
but e-mail. If you
