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How do you set, clear, and toggle a single bit?
... string with the bitwise NOT operator (~), then AND it.
Toggling a bit
The XOR operator (^) can be used to toggle a bit.
number ^= 1UL << n;
That will toggle the nth bit of number.
Checking a bit
You didn't ask for this, but I might as well add it.
To check a bit, shift the number n to the ri...
How can I remove a flag in C?
...
@Dennis I thought XOR would work to remove an already set flag. notification.sound ^= Notification.DEFAULT_SOUND;
– likejudo
Apr 14 '14 at 9:56
...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...i_escape 0x10,0x6,0x2,0x75,0x78
.cfi_escape 0x10,0x3,0x2,0x75,0x74
xorl %edi, %edi
subl $24, %esp
call ___main
L4:
movl %edi, (%esp)
movl $__ZSt4cout, %ecx
call __ZNSolsEi
movl %eax, %esi
movl (%eax), %eax
subl $4, %esp
movl -...
Require either of two arguments using argparse
...er I realized it actually solves both conditions proposed in the question (XOR, basically). My initial concern was that yours only solved only one of the two conditions.
– ijoseph
Apr 13 '18 at 17:28
...
Peak detection in a 2D array
...ning only peaks,
#by removing the background from the local_max mask (xor operation)
detected_peaks = local_max ^ eroded_background
return detected_peaks
#applying the detection and plotting results
for i, paw in enumerate(paws):
detected_peaks = detect_peaks(paw)
pp.subplot(...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
...ut you should fix your answer using pow instead of ^ (which is the logical xor operator, not power, in C language).
– kriss
Jun 20 '13 at 14:20
6
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Why does GCC generate such radically different assembly for nearly the same C code?
...fast_trunc_one() - register names and everything.
Notice that there are no xors in the assembly for fast_trunc_one(). That's what gave it away for me.
How so?
Step 1: sign = -sign
First, let's take a look at the sign variable. Since sign = i & 0x80000000;, there are only two possible values th...
What is the preferred Bash shebang?
...through 2018 /usr/bin/env exists on more machines than either of /bin/bash xor /usr/bin/bash, so a script that starts with this line will do the expected thing on as many machines as possible.
– l0b0
Mar 8 '18 at 20:28
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Operator Overloading with C# Extension Methods
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@SparK ^ is the xor operator in C#
– Jacob Krall
May 31 '16 at 21:26
1
...
Using scanf() in C++ programs is faster than using cin?
...a simple case: a program to read a list of numbers from standard input and XOR all of the numbers.
iostream version:
#include <iostream>
int main(int argc, char **argv) {
int parity = 0;
int x;
while (std::cin >> x)
parity ^= x;
std::cout << parity << std::en...