C / C++ / MFC

DWORD dw = 0xFC246A09;    //or whatever else...
DWORD mask = 0x00008000;  //32th bit from right
 
if ((dw & mask) == mask) {
    //the bit is set, then we unset it
    dw &= ~mask;
}
else {
    //the bit equals 0, then we set it to 1
    dw |= mask;
}

dw ^= mask;

9ine wrote:

the fewer the code the better

9ine wrote:

...it is quite normal to use if(!a) instead of if(a==0)

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

9ine wrote:

0100101010011[1]001001010100111001 to invert 1 value bit
0100101010011[0]001001010100111001

unsigned int x = 0x4A9C9539; // 1001010100111001001010100111001
x &= ~0x40000;               // 0000000000001000000000000000000

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb