addfsbyte-addfsword-addfsdword.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: __addfsbyte, __addfsword, __addfsdword	__addfsbyte, __addfsword, __addfsdword	09/02/2019	__addfsbyte_cpp __addfsdword __addfsword_cpp __addfsbyte __addfsword __addfsdword_cpp	__addfsdword intrinsic __addfsword intrinsic __addfsbyte intrinsic	706c70df-6b52-4401-9268-2977ed8ad715

__addfsbyte, __addfsword, __addfsdword

Microsoft Specific

Add a value to a memory location specified by an offset relative to the beginning of the FS segment.

Syntax

void __addfsbyte(
   unsigned long Offset,
   unsigned char Data
);
void __addfsword(
   unsigned long Offset,
   unsigned short Data
);
void __addfsdword(
   unsigned long Offset,
   unsigned long Data
);

Parameters

Offset
[in] The offset from the beginning of FS.

Data
[in] The value to add to the memory location.

Requirements

Intrinsic	Architecture
__addfsbyte	x86
__addfsword	x86
__addfsdword	x86

Header file <intrin.h>

Remarks

These routines are available only as intrinsics.

END Microsoft Specific

See also

__incfsbyte, __incfsword, __incfsdword
__readfsbyte, __readfsdword, __readfsqword, __readfsword
__writefsbyte, __writefsdword, __writefsqword, __writefsword
Compiler intrinsics