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OpCodes.Sub Field

Subtracts one value from another and pushes the result onto the evaluation stack.

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

public static readonly OpCode Sub
public static final OpCode Sub
public static final var Sub : 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

59

sub

Subtracts one value from another, returning a new numeric value.

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; value2 is subtracted from value1.

  4. The result is pushed onto the stack.

Overflow is not detected for integer operations (for proper overflow handling, see Sub_Ovf).

Integer subtraction wraps, rather than saturates. For example: assuming 8-bit integers, where value1 is set to 0 and value2 is set to 1, the "wrapped" result will be 255.

Floating-point overflow returns +inf (PositiveInfinity) or -inf (NegativeInfinity).

The following Emit method overload can use the sub 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

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