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OpCodes.Clt Field

Compares two values. If the first value is less than the second, 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

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


Assembly Format


FE 04


Pushes 1 if value1 is less than value2; else pushes 0.

The stack transitional behavior, in sequential order, is: value1 is pushed onto the stack.

  1. value2 is pushed onto the stack.

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

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

The clt instruction compares value1 and value2. If value1 is strictly less than value2, then an int32 value of 1 is pushed on the stack. Otherwise, an int32 value of 0 is pushed on the stack.

  • For floating-point numbers, clt returns 0 if the numbers are unordered (that is, if one or both of the arguments are NaN).

The following Emit method overload can use the clt opcode:

  • ILGenerator.Emit(OpCode)

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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