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OpCodes.Add Field

Adds two values and pushes the result onto the evaluation stack.

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

public static readonly OpCode Add
public static final OpCode Add
public static final var Add : OpCode

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

58

add

Adds two numeric values, 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; value1 is added to value2.

  4. The result is pushed onto the stack.

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

Integer addition wraps, rather than saturates. For example, assuming 8-bit integers where value1 is set to 255 and value2 is set to 1, the wrapped result is 0 rather than 256.

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

The acceptable operand types and their corresponding result data type are listed in the table below. If there is no entry for a particular type combination (for example, int32 and float; int32 and int64), it is an invalid Microsoft Intermediate Language (MSIL) and generates an error.

operand

value1 type

value2 type

result type

add

int32

int32

int32

add

int32

natural int

natural int

add

int32

&

&

add

int32

*

*

add

int64

int64

int64

add

natural int

int32

natural int

add

natural int

natural int

natural int

add

natural int

&

&

add

natural int

*

*

add

F

F

F

add

&

int32

&

add

&

natural int

&

add

*

int32

*

add

*

natural int

*

The following Emit method overload can use the add opcode:

  • ILGenerator.Emit(OpCode)

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

Community Additions

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