Nios® II Processor Reference Guide

ID 683836
Date 10/22/2020
Public
Document Table of Contents

8.5.38. cmpltui

Instruction compare less than unsigned immediate
Operation

if ((unsigned) rA < (unsigned) (0x0000 : IMM16))

then rB ←  1

else rB ←  0

Assembler Syntax

cmpltui rB, rA, IMM16

Example

cmpltui r6, r7, 100

Description

Zero-extends the 16-bit immediate value IMM16 to 32 bits and compares it to the value of rA. If rA < (0x0000 : IMM16), then cmpltui stores 1 to rB; otherwise stores 0 to rB.

Usage

cmpltui performs the unsigned < operation of the C programming language.

Exceptions

None

Instruction Type

I

Instruction Fields

A = Register index of operand rA

B = Register index of operand rB

IMM16 = 16-bit unsigned immediate value

Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
A B IMM16
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IMM16 0x30

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