#ifndef _NTRTL_H

DECLSPEC_DEPRECATED
NTSYSAPI
LARGE_INTEGER
NTAPI
RtlConvertLongToLargeInteger(
    _In_ LONG SignedInteger
    );

#endif
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// wdm.h

DECLSPEC_DEPRECATED_DDK_WINXP LARGE_INTEGER NTAPI_INLINE RtlConvertLongToLargeInteger(
  [in] LONG SignedInteger
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-wdm-rtlconvertlongtolargeinteger)

RtlConvertLongToLargeInteger function

Description

The RtlConvertLongToLargeInteger routine converts the input signed integer to a signed large integer.

Parameters

`SignedInteger` [in]

Specifies an integer of type LONG.

Return value

RtlConvertLongToLargeInteger returns the large integer result.

Remarks

This routine is not supported in Windows XP. Use native support for __int64 instead.

View the official Windows Driver Kit DDI reference