NOT

Bitwise NOT

NOT rd, rs

Computes the bitwise logical negation (one's complement).

Encoding

Binary Layout

111111111111

31:20

rs1

19:15

100

14:12

rd

11:7

0010011

6:0

 

Format I-Type

Opcode 0x00004013

Extension Pseudo

Operands

• rd
  Destination register (integer)
• rs
  Source

Example

NOT x10, x11

// Inverts all bits of x11.

Related

More in Pseudo

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

NOT performs a bitwise logical NOT of rs1 and writes to rd. It is a pseudoinstruction for XORI rd, rs1, -1.

Operation

R[rd] = ~R[rs];