OpCodes.Sub_Ovf_Un Field
Subtracts one unsigned integer value from another, performs an overflow check, and pushes the result onto the evaluation stack.
Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)
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 |
|---|---|---|
|
DB |
sub.ovf.un |
Subtracts one unsigned integer value from another with an overflow check. |
The stack transitional behavior, in sequential order, is:
-
value1 is pushed onto the stack.
-
value2 is pushed onto the stack.
-
value2 and value1 are popped from the stack; value2 is subtracted from value1 with a check for overflow.
-
The result is pushed onto the stack.
OverflowException is thrown if the result can not be represented in the result type.
This operation is performed on signed integers; for floating-point values, use Sub.
The following Emit method overload can use the sub.ovf.un opcode:
-
ILGenerator.Emit(OpCode)
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