cset

Conditional Set

CSET <Wd>, <cond>

Sets register to 1 if condition true, else 0. (Alias for CSINC)

Pseudocode Operation

if ConditionHolds(cond) then
  Wd ← 1
else
  Wd ← 0

Example

CSET w0, cond

Encoding

Binary Layout

0

31

0

30

0

29

11010100

28:21

11111

20:16

cond

15:12

0

11

1

10

11111

9:5

Rd

4:0

 

Format Cond Select

Opcode 0x1A9F07E0

Extension Base

Operands

• Wd
  Destination 32-bit integer register
• cond
  Condition

Related

More in Base

Reference

View in Arm A64 ISA Reference ↗ Arm A64 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x1A9F07E0	CSET <Wd>, <invcond>		A64		0 | 0 | 0 | 11010100 | 11111 | cond | 0 | 1 | 11111 | Rd
0x9A9F07E0	CSET <Xd>, <invcond>		A64		1 | 0 | 0 | 11010100 | 11111 | cond | 0 | 1 | 11111 | Rd

Description

Conditional Set sets the destination register to 1 if the condition is TRUE, and otherwise sets it to 0.