bit reversal based on a mask given

bitReverseMasked

// Input : bitReverseMasked(0x9, 1, 3) 
// Output : 0x3 [ Reversing bit between low and high] 
uint32_t bitReverseMasked(uint32_t val, uint8_t low, uint8_t high)
{
	uint32_t mask; 
	uint32_t rev_val; 
	uint8_t i; 

	mask = ((1UL<<(high - low + 1)) - 1) << low; 
	rev_val = val & ~mask; 

	for (i=low; i<=high; i++) {
		if ((val>>i) & 0x1) {
			rev_val |= 1UL << (high - i + low); 
		}
	}

	return rev_val; 
}