Implement a function that fetches bits from a byte array, of which
bit indexes are stated in bit_idxs array containing n elements. It
returns the sum of these bits after clearing the bits that are set
(value 1).
CODE TEMPLATE:
unsigned int fetch_bits_sum_and_clear(unsigned char* array,
unsigned int* bit_idxs, unsigned int n) {
return 0;
}
TIPS:
brief Fetches bits from a byte array, of which bit indexes are
stated in
* bit_idxs array containing n
elements. It returns the sum of these
* bits after clearing the bits that are
set.
*
* \details This function fetches bits from a byte array,
which contains
* suitable number of bytes
to cover the largest bit index in
* bit_idxs array. It
assumes that the bytes in the array are
* composed as
follows:
* if array = {0xA3, 0x58},
it assumes a number
* 0xA358 = 1010 0011 0101
1000, and assigns bit index 0 as the
* left most bit.
* if bit_idxs = {0, 2, 10}
and n = 3, it fetches
* 1010 0011 0101 1000
* ^ ^ ^
* 1, 1, 0 since bit 0 is 1,
bit 2 is 1, and bit 10 is 0.
* Then, it sums these bit
values, which is 2. Before returning the sum,
* it clears the bits that
are set, that is, it clears bit 0 and bit 2
* so that the array
becomes
* 0000 0011 0101 1000
* ^ ^ ^
* array = {0x03,
0x58}.
*
* \param array The byte array which has suitable number of
elements to cover
* the largest
value in bit_idxs array.
* \param bit_idxs The array of bit indexes, which has n
elements in it.
* \param n The number of elements in bit_idxs
array.
* \return The sum of fetched bit values.
*
* \note In your implementation, do not write to stdout to
check the functionality.
* You should use my_tests function to
print and check the functionality
* of your implementation.
- Binary Operations In C Implement A Function That Fetches Bits From A Byte Array Of Which Bit Indexes Are Stated In Bit 1 (81.08 KiB) Viewed 37 times