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by: Davide Bruzzone |
last post by:
Greetings all...
I need to create a number of bitfield structs whose contents are
smaller than the size of an int. For example:
typedef struct foo FOO;
struct foo {
unsigned char fieldOne: 2, fieldTwo: 6;
};
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by: Ray |
last post by:
When a single-bit bitfield that was formed from an enum
is promoted/cast into an integer, does ANSI C say anything
about whether that integer should be signed or unsigned?
SGI IRIX cc thinks it is an unsigned integer, so I
see a +1 if the bit is set. Microsoft VC++ thinks it's
signed, so I see -1 if the bit is set.
Ex.
typedef enum {
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by: b83503104 |
last post by:
When are they not consistent?
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by: andynaik |
last post by:
Hi,
Whenever we type in this code
int main()
{
printf("%f",10);
}
we get an error. We can remove that by using #pragma directive t
direct that to the 8087. Even after that the output is 0.00000 and no
10.0000. Can anybody tell me why it is like that and why typecasting i
not done in this case?
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by: Nishu |
last post by:
Hi All,
Is it valid in C to typecast a pointer?
eg. code snippet... considering int as 16 bit and long as 32 bit.
int *variable, value;
*((long*)variable)++ = value;
*((long*)variable)++ = value;
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by: nass |
last post by:
hello everyone,
i read somewhere that it is possible to define a BitFields structure
so i set out to:
struct IC_X
{
unsigned short int dump:2;
unsigned short int ic1:10;
unsigned short int ic2:10;
unsigned short int ic3:10;
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by: arne |
last post by:
Hi all,
cleaning up some elderly code, I stumbled across the following:
/**************************************************/
struct {
uint bf:8;
char a1;
char a2;
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by: shaun roe |
last post by:
For a bit of seasonal festive fun, I thought I'd try making a bitfield
function, i.e. a function returning, for example, the value of bits 1 to
5 of a word as an integer, when the exact bits are known at compile
time.
The data word is always 32 bit unsigned integer (its a data stream from
some embedded controller).
The legacy code I have has lines like:
errNum = (dataWord>>1) & 31; //bits 1 to 5 is an error code
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by: mail.dsp |
last post by:
Consider following:
unsigned char i= 0;
Now when we perform "++i" Is "i" typecasted into "int", "++" operator
increment its value and finally typecasted into "unsigned char"?
Thanks in advance
--
Daya
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
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