BCLRI

Bit Clear Immediate

BCLRI rd, rs1, imm

Clears a single bit in rs1 at the index specified by an immediate.

Encoding

Binary Layout

010010

31:26

shamtd

25:20

rs1

19:15

001

14:12

rd

11:7

0010011

6:0

 

Format I-Type

Opcode 0x48001013

Extension Zbs

Operands

• rd
  Destination register (integer)
• rs1
  Source
• imm
  Index

Example

BCLRI x10, x11, 3

// Clear bit 3.

Related

More in Zbs

Reference

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

Description

BCLRI clears the single bit of rs1 selected by the immediate, writing the result to rd.

Operation

R[rd] = R[rs1] & ~(1 << imm);