This documentation is archived and is not being maintained.

OpCodes.Clt_Un Field

Compares the unsigned or unordered values value1 and value2. If value1 is less than value2, then the integer value 1 (int32) is pushed onto the evaluation stack; otherwise 0 (int32) is pushed onto the evaluation stack.

Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)

public static readonly OpCode Clt_Un
public static final OpCode Clt_Un
public static final var Clt_Un : OpCode
Not applicable.

The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

Format

Assembly Format

Description

FE 03

clt.un

Pushes 1 if value1 is less than value2; else pushes 0 (unsigned values).

The stack transitional behavior, in sequential order, is:

  1. value1 is pushed onto the stack.

  2. value2 is pushed onto the stack.

  3. value2 and value1 are popped from the stack; clt.un tests if value1 is less than value2.

  4. If value1 is less than value2, 1 is pushed onto the stack; otherwise 0 is pushed onto the stack.

The clt.un instruction compares value1 and value2. An int32 value of 1 is pushed on the stack if any of the following is true:

  • value1 is strictly less than value2 (as for clt).

  • For floating-point numbers, value1 is not ordered with respect to value2.

  • For integer values, value1 is strictly less than value2 when considered as unsigned numbers.

Otherwise, an int32 value of 0 is pushed on the stack.

The following Emit method overload can use the clt.un opcode:

  • ILGenerator.Emit(OpCode)

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
Show: