DWordSub function

Subtracts one value of type DWORD from another.

Syntax

HRESULT DWordSub(
  _In_  DWORD dwMinuend,
  _In_  DWORD dwSubtrahend,
  _Out_ DWORD *pdwResult
);

Parameters

• dwMinuend [in]
  Type: DWORD

  The value from which dwSubtrahend is subtracted.

• dwSubtrahend [in]
  Type: DWORD

  The value to subtract from dwMinuend.

• pdwResult [out]
  Type: DWORD*

  A pointer to the result. If the operation results in a value that overflows or underflows the capacity of the type, the function returns INTSAFE_E_ARITHMETIC_OVERFLOW and this parameter is not valid.

Return value

Type: HRESULT

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

This is one of a set of inline functions designed to provide arithmetic operations and perform validity checks with minimal impact on performance.

Requirements