Top "Bit-shift" questions

A bit shift operation moves the bits contained in a binary numeral or bit pattern to the left or to the right.

Bit Setting and Bit Shifting in Ansi C

Can anyone explain this bitwise operation syntax? #define Bitset(var,bitno) ((var) |=1UL<<(bitno)) I know it sets …

c bit-manipulation bitwise-operators bit-shift ansi
How to shift an array of bytes by 12-bits

I want to shift the contents of an array of bytes by 12-bit to the left. For example, starting with …

c arrays bit-shift bitset
Verilog Barrel Shifter

I want to create a 64-bit barrel shifter in verilog (rotate right for now). I want to know if there …

rotation verilog bit-shift shift case-statement
Why does left shift operation invoke Undefined Behaviour when the left side operand has negative value?

In C bitwise left shift operation invokes Undefined Behaviour when the left side operand has negative value. Relevant quote from …

c++ c language-lawyer undefined-behavior bit-shift
Shift Operators in C++

If the value after the shift operator is greater than the number of bits in the left-hand operand, the result …

c++ operators bit-shift
Bitwise (Bitshift) operations on 64-bit integers in C++

I'm trying to deal with bitboards, which requires me to set a particular bit in a 64-bit unsigned integer. To …

c++ bit-manipulation bit-shift bitwise-or bitboard
Is Shifting more than 32 bits of a uint64_t integer on an x86 machine Undefined Behavior?

Learning the hard way, I tried to left shift a long long and uint64_t to more than 32 bits on …

c++ c x86 bit-shift uint64
Bitshift in javascript

I've got a really big number: 5799218898. And want to shift it right to 13 bits. So, windows-calculator or python gives me: 5799218898 &…

javascript bit-shift
Is left and right shifting negative integers defined behavior?

I know, right shifting a negative signed type depends on the implementation, but what if I perform a left shift? …

c++ undefined-behavior bit-shift
Arithmetic shift acts as a logical shift, regardless of the signed variable

I've got a register declared as so: logic signed [15:0][2:0][15:0] registers; When I place a 2's compliment number into the array …

verilog bit-shift system-verilog