Question

typedef unsigned int  StatusCode;

StatusCode quality = 0;

#define PARTIALBIT 0x05

quality |= PARTIALBIT ;// I am setting a partial bit here

// ….

At other part of code I have to check if paritial bit is set and I have to clear it.
How do I acheive this in C ?

Thanks!

Answer 1

Try this:

if (quality & PARTIALBIT)
{
    // bit was set, do processing
    // ...
    // then clear the bit
    quality &= ~PARTIALBIT;
}

Also, if you have to set bit 5, then you’re on the wrong way. If you want to set bit 5, use:

#define PARTIALBIT (1 << 5)

instead.