DWordPtrAdd function (intsafe.h)

Adds two values of type DWORD_PTR.

Syntax

HRESULT DWordPtrAdd(
 [in] DWORD_PTR dwAugend,
 [in] DWORD_PTR dwAddend,
 [out] DWORD_PTR *pdwResult
);

Parameters

[in] dwAugend

Type: DWORD_PTR

The first value in the equation.

[in] dwAddend

Type: DWORD_PTR

The value to add to dwAugend.

[out] pdwResult

Type: DWORD_PTR*

A pointer to the sum. 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