Swaps the nth byte and the mth byte
Spletbyteswap - swaps the nth byte and the mth byte Guest 6 20th Oct, 2024 . Plaintext 20.31 KB. copy share raw download clone embed report print. Loading Please wait... Splet3. Just use a temporary variable and move the last bit into that variable, then shift the bit in that direction and end of masking in the bits in the tmp var and you are done. Update: Let's add some code and then you can choose what is more readable. The working one liner.
Swaps the nth byte and the mth byte
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Splet29. jan. 2015 · 2 Answers Sorted by: 1 Extract the ith byte by using ( (1ll << ( (i + 1) * 8)) - 1) >> (i * 8). Swap using the XOR operator, and put the swapped bytes in their places. Splet23. okt. 2024 · * first get the bytes needed to swap: n_byte and m_byte, which * seperately present nth byte of x and mth byte of y. * then set y = n_byte ^ m_byte. * because y ^ n_byte = n_byte ^ m_byte ^ n_byte = m_byte, * same as y ^ m_byte, so x ^= y << n will set nth byte to m_byte, * and x ^= y << m will set mth byte to n_byte. */ int y = 0; n = n << 3;
Splet* byteSwap - swaps the nth byte and the mth byte * Examples: byteSwap (0x12345678, 1, 3) = 0x56341278 * byteSwap (0xDEADBEEF, 0, 2) = 0xDEEFBEAD * You may assume that 0 … Splet28. mar. 2024 · 1 Answer Sorted by: 1 Because if n is a position within the word, in bytes, then 8*n is the same position in bits. And n<<3 is the same as 8*n (2 3 = 8). With n=1, …
Splet16. okt. 2013 · One solution in your case (unless you have strict restriction on space usage) would be to copy your file into another skipping bytes that you do not need. Depends on … SpletC code required * byteSwap - swaps the nth byte and the mth byte * Examples: byteSwap (0x12345678, 1, 3) = 0x56341278 * byteSwap (0xDEADBEEF, 0, 2) = 0xDEEFBEAD * You may assume that 0 <= n <= 3, 0 <= m <= 3 * Legal ops: ! ~ & ^ + << >> * Max ops: 25 * Rating: 2 */ Expert Answer 100% (5 ratings)
SpletbyteSwap(x, n, m) Swaps the nth byte and the mth byte of x 2 25 rotateRight(x, n) Rotate xto the right by nbits 3 25 bitReverse(x) Reverse bits in a 32-bit word 4 45 Table 2: Bit-Level Manipulation Functions. 4.3 Floating-Point Operations For this part of the assignment, you will implement some common single-precision floating-point opera-tions.
houseboat to rent londonSpletAdd a comment. 1. If you are wanting a byte, wouldn't the better solution be: byte x = (byte) (number >> (8 * n)); This way, you are returning and dealing with a byte instead of an int, so we are using less memory, and we don't have to do the binary and operation & 0xff just to mask the result down to a byte. linn county iowa inmates onlineSplet05. jan. 2024 · /* howManyBits - return the minimum number of bits required to represent x in * two's complement * Examples: howManyBits (12) = 5 * howManyBits (298) = 10 * howManyBits (-5) = 4 * howManyBits (0) = 1 * howManyBits (-1) = 1 * howManyBits (0x80000000) = 32 * Legal ops: ! ~ & ^ + > * Max ops: 90 * Rating: 4 */ int … linn county iowa electionSplet05. apr. 2024 · For example, for a 24MB text file, I want to change the 1048576th (1024*1024) byte to 1, 2097152th (2mb to bytes) byte to 2, and so on. ... Stack Exchange Network Stack Exchange network consists of 181 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their … linn county iowa inmates listSplet27. sep. 2024 · I am suppose to swap the nth byte and the mth byte. I am given examples such as 0x12345678, 1, 3) = 0x56341278. 1 meaning n and 3 meaning m. I am suppose … houseboat tours in floridaSpletExpert Answer. The given function swap the bytes indicated by n and m in the variable x and after that, the value is returned to the calling function. The size of the integer variable is four bytes, so the possible value of m and n is 0 to 3 only. int a = n<<3; Th …. /* * byteSwap swaps the nth byte and the mth byte * Examples: byteSwap ... houseboat tour sausalitoSpletExpert Answer. Answer to C code required * byteSwap - swaps the nth byte and the mth byte * Examples: byteSwap (0x12345678, 1, 3) = 0x56341278 * b... We have an Answer from Expert. linn county iowa jail commissary