This is an implementation of Basic Bit Manipulation Operation written in Objective-C.

BitManipulation.m

- (BOOL)getBitforNumber:(NSInteger)num atIndex:(NSUInteger)i
{
    return (num & (1 << i)) != 0;
}

- (NSInteger)setBitforNumber:(NSInteger)num atIndex:(NSUInteger)i
{
    return num | (1 << i);
}

- (NSInteger)clearBitforNumber:(NSInteger)num atIndex:(NSUInteger)i
{
    NSInteger mask = ~(1 << i);
    return num & mask;
}

- (NSInteger)clearBitsforNumber:(NSInteger)num throughIndexI:(NSUInteger)i
{
    NSInteger mask = ~((1 << (i + 1)) - 1);
    return num & mask;
}

- (NSInteger)updateBitforNumber:(NSInteger)num atIndex:(NSUInteger)i withValue:(NSUInteger)v
{
    NSInteger mask = ~(1 << i);
    return (num & mask) | (v << i);
}