NEG

Negate

NEG rd, rs

Computes the two's complement negation (arithmetic negative).

Encoding

Binary Layout

010000000000

31:20

rs1

19:15

000

14:12

rd

11:7

0110011

6:0

 

Format R-Type

Opcode 0x40000033

Extension Pseudo

Operands

• rd
  Destination register (integer)
• rs
  Source

Example

NEG x5, x6

// x5 = -x6

Related

More in Pseudo

Reference

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

Description

NEG negates rs1 and writes to rd. It is a pseudoinstruction for SUB rd, x0, rs1.

Operation

R[rd] = 0 - R[rs];