How do you check whether the 5th bit and the 2nd bit of the same number are the same?

[mikeymyman]

How do you check whether the 5th bit and the 2nd bit of the same number are the same? (In C programming)

[donbock]

How would you go about isolating these bits?
(By "isolate", I mean ignore all the other bits.)

[mikeymyman]

Bit mask only the 5th bit and the 2nd bit? But how do you compare these two bits if they are part of the same number?

[Oralloy]

((value&0x20)>>5)==((value&0x04)>>2)

[donbock]

If the bits are equal to each other then they must either all be equal to 0 or all be equal to 1. The following C code works for comparing any number of bits.

#include <stdbool.h>
bool isMatchingBits(unsigned long value, unsigned long mask) {
    const unsigned long isolatedBits = value & mask;
    return ((isolatedBits == 0uL) || (isolatedBits == mask));
}

By the way, it is usually safer to use an unsigned type when working with individual bits.