Symptoms

Consider the following scenario:

  • You run a 64-bit Microsoft Visual C++ 2008 Service Pack 1 (SP1) application.

  • The application is linked with floating-point modules that are written in assembly code, or that are built with a non-Microsoft C++ compiler.

  • The application calls a floating-point function in an external module that raises an x87 exception, and then calls the Visual Studio C-Runtime fmod function.

In this scenario, the returned value of the fmod function is an indeterminate (IND) value instead of the expected floating-point value.

For example, you may encounter the problem when the following conditions are true:

  • The external module that executes floating-point code was generated by the Intel C++ compiler.

  • The external module is executed on non-Intel x64 processors, such as AMD processors or VIA processors.

Note This problem also occurs when you use the fmodf function in the same scenario.

Cause

This problem occurs because of an issue in the assembly code in the 64-bit version of the fmod function. The function incorrectly treats some irrelevant flags as errors.

Resolution

Hotfix information


A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

To apply the hotfix, you must have Visual Studio 2008 SP1 installed.

Restart requirement

You do not have to restart the computer after you apply the hotfix.

Hotfix replacement information

This hotfix replaces the following hotfixes:

972497 FIX: The fmod function returns an indeterminate (IND) value instead of the correct floating-point value in an x64-bit Visual C++ 2008 application

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

For all supported x86-based versions of the Visual Studio 2008:

File name

File version

File size

Date

Time

Platform

Atl90.dll

9.0.30729.5054

176,456

20-Aug-2010

01:06

x64

Atl90.dll

9.0.30729.5054

416,072

20-Aug-2010

01:15

IA-64

Atl90.dll

9.0.30729.5054

159,048

20-Aug-2010

02:59

x86

Array

16,417

29-Oct-2008

11:55

Random

83,273

29-Oct-2008

11:55

Tuple

12,371

29-Oct-2008

11:55

Xxfunction

9,845

29-Oct-2008

11:55

Afxframeimpl.cpp

56,204

24-Oct-2008

15:03

Afxglobals.cpp

34,156

24-Oct-2008

15:03

Afxglobals.h

10,144

24-Oct-2008

15:03

Afxtoolbarimages.cpp

76,665

19-Aug-2010

16:41

Almap.dll

18,736

19-Aug-2010

22:27

x86

Almap.lib

17,808

19-Aug-2010

22:27

x86

Atl.lib

20,012

19-Aug-2010

22:31

x86

Atl.lib

21,882

19-Aug-2010

22:49

x86

Atl.lib

19,256

19-Aug-2010

23:24

x86

Atlassem.h

2,037

19-Aug-2010

22:23

Atlbuild.h

572

19-Aug-2010

22:01

Atlcom.h

173,186

10-Aug-2010

22:27

Atlcomcli.h

68,589

11-Aug-2010

12:28

Atldb.h

384,029

19-Aug-2010

15:47

Atldload.lib

396,148

19-Aug-2010

22:31

x86

Atldload.lib

493,480

19-Aug-2010

22:49

x86

Atldload.lib

429,022

19-Aug-2010

23:24

x86

Atlhost.h

77,913

10-Aug-2010

19:50

Atls.lib

1,413,006

19-Aug-2010

22:31

x86

Atls.lib

1,354,526

19-Aug-2010

22:49

x86

Atls.lib

1,114,536

19-Aug-2010

23:24

x86

Atlsd.lib

1,784,144

19-Aug-2010

22:31

x86

Atlsd.lib

2,031,798

19-Aug-2010

22:49

x86

Atlsd.lib

1,605,960

19-Aug-2010

23:24

x86

Bardock.cpp

25,372

30-Aug-2010

09:15

Comdef.h

8,731

12-Aug-2010

15:14

Complex.1.7417.cn.ln

33,628

12-Aug-2010

15:14

Complex.7294.cn.ln

32,105

12-Aug-2010

17:54

Crtassem.h

951

19-Aug-2010

22:22

x86

Crtassem.h

1,298

19-Aug-2010

22:23

Crtdefs.h

107,919

19-Aug-2010

22:23

Crtdefs.h

97,327

12-Aug-2010

17:54

x86

Dbgheap.c.4074.cn.ln

105,748

19-Aug-2010

22:23

Deque.1.7431.cn.ln

39,247

12-Aug-2010

15:14

Deque.7308.cn.ln

39,247

12-Aug-2010

17:54

Fctional.1.7437.cn.ln

35,120

12-Aug-2010

15:14

Fctional.7314.cn.ln

35,120

12-Aug-2010

17:54

Hash.map.1.13876.cn.ln

9,462

12-Aug-2010

15:14

Hash.map.9791.cn.ln

9,462

12-Aug-2010

17:54

Hash.set.1.13877.cn.ln

8,183

12-Aug-2010

15:14

Hash.set.9792.cn.ln

8,183

12-Aug-2010

17:54

Intrin.h

89,129

12-Aug-2010

17:54

x86

Intrin.h

91,683

19-Aug-2010

22:23

Iosfwd.1.7447.cn.ln

30,413

12-Aug-2010

15:14

Iosfwd.7324.cn.ln

24,926

12-Aug-2010

17:54

Istream.1.7451.cn.ln

35,064

12-Aug-2010

19:36

Istream.7328.cn.ln

32,660

12-Aug-2010

19:37

Libcmt.lib

9,217,408

19-Aug-2010

22:31

x86

Libcmt.lib

12,760,908

19-Aug-2010

22:43

x86

Libcmt.lib

10,007,012

19-Aug-2010

23:24

x86

Libcmtd.lib

11,361,330

19-Aug-2010

22:31

x86

Libcmtd.lib

16,469,324

19-Aug-2010

22:44

x86

Libcmtd.lib

12,749,536

19-Aug-2010

23:24

x86

Libcpmt.lib

5,349,928

19-Aug-2010

22:31

x86

Libcpmt.lib

8,755,304

19-Aug-2010

22:45

x86

Libcpmt.lib

6,963,462

19-Aug-2010

23:24

x86

Libcpmtd.lib

6,781,270

19-Aug-2010

22:31

x86

Libcpmtd.lib

11,714,090

19-Aug-2010

22:45

x86

Libcpmtd.lib

9,299,518

19-Aug-2010

23:24

x86

Mfc90.lib

5,196,148

19-Aug-2010

23:52

x64

Mfc90.lib

5,197,224

19-Aug-2010

23:16

x86

Mfc90d.lib

6,026,792

19-Aug-2010

23:53

x64

Mfc90d.lib

6,017,756

19-Aug-2010

23:16

x86

Mfc90u.lib

6,501,186

19-Aug-2010

23:53

x64

Mfc90u.lib

6,595,792

19-Aug-2010

23:17

x86

Mfc90ud.lib

7,541,862

19-Aug-2010

23:53

x64

Mfc90ud.lib

7,622,206

19-Aug-2010

23:17

x86

Mfc.bsc

18,705,408

20-Aug-2010

00:53

Mfc_loc.manifest

5,882

20-Aug-2010

03:03

x86

Mfcassem.h

3,143

19-Aug-2010

22:54

Mfcdload.lib

780,354

19-Aug-2010

23:50

x86

Mfcm90.lib

43,104

19-Aug-2010

23:54

x64

Mfcm90.lib

41,052

19-Aug-2010

23:18

x86

Mfcm90d.lib

46,182

19-Aug-2010

23:54

x64

Mfcm90d.lib

44,596

19-Aug-2010

23:18

x86

Mfcm90u.lib

44,548

19-Aug-2010

23:54

x64

Mfcm90u.lib

42,460

19-Aug-2010

23:18

x86

Mfcm90ud.lib

47,640

19-Aug-2010

23:54

x64

Mfcm90ud.lib

46,014

19-Aug-2010

23:18

x86

Mfcs90.lib

1,054,706

19-Aug-2010

23:50

x86

Mfcs90.lib

1,048,944

19-Aug-2010

23:14

x86

Mfcs90d.lib

1,049,108

19-Aug-2010

23:50

x64

Mfcs90d.lib

1,020,312

19-Aug-2010

23:14

x86

Mfcs90u.lib

1,068,310

19-Aug-2010

23:51

x64

Mfcs90u.lib

1,063,030

19-Aug-2010

23:15

x86

Mfcs90ud.lib

1,065,496

19-Aug-2010

23:51

x86

Mfcs90ud.lib

1,035,730

19-Aug-2010

23:14

x86

Microsoft.vc90.atl.manifest

858

20-Aug-2010

01:10

x64

Microsoft.vc90.atl.manifest

857

20-Aug-2010

01:20

IA-64

Microsoft.vc90.atl.manifest

856

20-Aug-2010

03:03

x86

Microsoft_vc90_atl_x86_ia64.msm

229,888

20-Aug-2010

11:29

IA-64

Microsoft_vc90_atl_x86.msm

150,528

20-Aug-2010

09:54

x86

Microsoft_vc90_atl_x86_x64.msm

151,552

20-Aug-2010

10:45

x64

Microsoft.vc90.crt.manifest

1,862

20-Aug-2010

01:10

x64

Microsoft.vc90.crt.manifest

1,861

20-Aug-2010

01:20

IA-64

Microsoft.vc90.crt.manifest

1,860

20-Aug-2010

03:03

x86

Microsoft_vc90_crt_x86_ia64.msm

1,041,408

20-Aug-2010

11:24

IA-64

Microsoft_vc90_crt_x86.msm

614,912

20-Aug-2010

09:18

x86

Microsoft_vc90_crt_x86_x64.msm

648,192

20-Aug-2010

10:39

x64

Microsoft.vc90.debugcrt.manifest

1,870

20-Aug-2010

01:10

x64

Microsoft.vc90.debugcrt.manifest

1,869

20-Aug-2010

01:20

IA-64

Microsoft.vc90.debugcrt.manifest

1,868

20-Aug-2010

03:03

x86

Microsoft_vc90_debugcrt_x86_ia64.msm

1,811,456

20-Aug-2010

11:19

IA-64

Microsoft_vc90_debugcrt_x86.msm

839,168

20-Aug-2010

09:12

x86

Microsoft_vc90_debugcrt_x86_x64.msm

844,288

20-Aug-2010

10:34

x64

Microsoft.vc90.debugmfc.manifest

2,368

20-Aug-2010

01:10

x64

Microsoft.vc90.debugmfc.manifest

2,366

20-Aug-2010

03:03

x86

Microsoft_vc90_debugmfc_x86_ia64.msm

4,759,040

07-Nov-2007

05:58

IA-64

Microsoft_vc90_debugmfc_x86.msm

5,569,024

20-Aug-2010

09:39

x86

Microsoft_vc90_debugmfc_x86_x64.msm

5,985,792

20-Aug-2010

10:24

x64

Microsoft.vc90.debugopenmp.manifest

867

20-Aug-2010

03:03

x86

Microsoft.vc90.debugopenmp.manifest

868

20-Aug-2010

01:20

x86

Microsoft.vc90.debugopenmp.manifest

869

20-Aug-2010

01:10

x86

Microsoft_vc90_debugopenmp_x86_ia64.msm

157,696

20-Aug-2010

10:50

IA-64

Microsoft_vc90_debugopenmp_x86.msm

108,544

20-Aug-2010

09:23

x86

Microsoft_vc90_debugopenmp_x86_x64.msm

107,520

20-Aug-2010

09:59

x64

Microsoft.vc90.mfc.manifest

2,359

20-Aug-2010

01:10

x64

Microsoft.vc90.mfc.manifest

2,357

20-Aug-2010

03:03

x86

Microsoft_vc90_mfc_x86_ia64.msm

2,600,960

07-Nov-2007

06:10

IA-64

Microsoft_vc90_mfc_x86.msm

4,188,160

20-Aug-2010

09:46

x86

Microsoft_vc90_mfc_x86_x64.msm

4,883,456

20-Aug-2010

10:29

x64

Microsoft.vc90.mfcloc.manifest

5,884

20-Aug-2010

01:10

x64

Microsoft.vc90.mfcloc.manifest

5,882

20-Aug-2010

03:03

x86

Microsoft_vc90_mfcloc_x86_ia64.msm

242,176

07-Nov-2007

06:18

IA-64

Microsoft_vc90_mfcloc_x86.msm

259,072

20-Aug-2010

09:33

x86

Microsoft_vc90_mfcloc_x86_x64.msm

257,024

20-Aug-2010

10:18

x64

Microsoft.vc90.openmp.manifest

861

20-Aug-2010

03:03

x86

Microsoft.vc90.openmp.manifest

862

20-Aug-2010

01:20

x86

Microsoft.vc90.openmp.manifest

863

20-Aug-2010

01:10

x86

Microsoft_vc90_openmp_x86_ia64.msm

124,416

20-Aug-2010

10:55

IA-64

Microsoft_vc90_openmp_x86.msm

98,304

20-Aug-2010

09:28

x86

Microsoft_vc90_openmp_x86_x64.msm

98,816

20-Aug-2010

10:13

x64

Msvcmrt.lib

1,529,808

19-Aug-2010

22:31

x86

Msvcmrt.lib

1,697,612

19-Aug-2010

23:24

x86

Msvcmrt.lib

1,846,526

19-Aug-2010

22:46

x86

Msvcmrtd.lib

1,625,960

19-Aug-2010

22:31

x86

Msvcmrtd.lib

1,804,926

19-Aug-2010

23:24

x86

Msvcmrtd.lib

1,956,882

19-Aug-2010

22:47

x86

Msvcprt.lib

1,654,516

19-Aug-2010

22:31

x86

Msvcprt.lib

2,140,986

19-Aug-2010

22:45

x86

Msvcprt.lib

1,686,818

19-Aug-2010

23:24

x86

Msvcprtd.lib

1,827,186

19-Aug-2010

22:31

x86

Msvcprtd.lib

2,369,332

19-Aug-2010

22:45

x86

Msvcprtd.lib

1,860,040

19-Aug-2010

23:24

x86

Msvcrt.lib

1,360,068

19-Aug-2010

22:31

x86

Msvcrt.lib

1,585,296

19-Aug-2010

22:44

x86

Msvcrt.lib

1,357,322

19-Aug-2010

23:24

x86

Msvcrtd.lib

1,392,990

19-Aug-2010

22:31

x86

Msvcrtd.lib

1,642,428

19-Aug-2010

22:44

x86

Msvcrtd.lib

1,400,234

19-Aug-2010

23:24

x86

Msvcurt.lib

15,375,466

19-Aug-2010

22:31

x86

Msvcurt.lib

15,737,148

19-Aug-2010

23:24

x86

Msvcurt.lib

15,882,482

19-Aug-2010

22:46

x86

Msvcurtd.lib

16,952,226

19-Aug-2010

22:31

x86

Msvcurtd.lib

17,303,538

19-Aug-2010

23:24

x86

Msvcurtd.lib

17,454,852

19-Aug-2010

22:47

x86

Nafxcw.lib

49,963,836

19-Aug-2010

23:17

x86

Nafxcw.lib

59,306,388

19-Aug-2010

23:53

x86

Nafxcwd.lib

52,949,400

19-Aug-2010

23:16

x86

Nafxcwd.lib

66,787,592

19-Aug-2010

23:53

x86

Nmmintrin.h

4,091

19-Aug-2010

22:23

x86

Nmmintrin.h

3,967

12-Aug-2010

17:54

Ompassem.h

951

19-Aug-2010

22:56

Ptrustm.lib

426,518

19-Aug-2010

22:31

x86

Ptrustmd.lib

433,690

19-Aug-2010

22:31

x86

Ptrustu.lib

426,518

19-Aug-2010

22:31

x86

Ptrustud.lib

433,690

19-Aug-2010

22:31

x86

Sdknames.lib

7,462

19-Aug-2010

22:27

x86

Sstream.1.7482.cn.ln

17,720

12-Aug-2010

15:14

Sstream.7358.cn.ln

16,685

12-Aug-2010

17:54

Stat64.c.4424.cn.ln

11,106

19-Aug-2010

22:23

Stat.c.4423.cn.ln

12,726

19-Aug-2010

22:23

Tcmap.lib

29,676

19-Aug-2010

22:27

x86

Tcmapdll.lib

32,058

19-Aug-2010

22:27

x86

Uafxcw.lib

50,880,300

19-Aug-2010

23:17

x86

Uafxcw.lib

60,097,306

19-Aug-2010

23:54

x86

Uafxcwd.lib

54,310,594

19-Aug-2010

23:17

x86

Uafxcwd.lib

68,073,040

19-Aug-2010

23:53

x86

Mfc90.dll

9.0.30729.5054

5,083,464

20-Aug-2010

01:06

x64

Mfc90.dll

9.0.30729.5054

3,765,064

20-Aug-2010

02:59

x86

Mfc90chs.dll

9.0.30729.5054

35,664

20-Aug-2010

01:06

x64

Mfc90chs.dll

9.0.30729.5054

35,664

20-Aug-2010

02:59

x86

Mfc90cht.dll

9.0.30729.5054

36,688

20-Aug-2010

01:06

x64

Mfc90cht.dll

9.0.30729.5054

36,688

20-Aug-2010

02:59

x86

Mfc90d.dll

9.0.30729.5054

7,418,184

20-Aug-2010

01:06

x64

Mfc90d.dll

9.0.30729.5054

5,933,896

20-Aug-2010

02:59

x86

Mfc90deu.dll

9.0.30729.5054

63,312

20-Aug-2010

01:06

x64

Mfc90deu.dll

9.0.30729.5054

63,312

20-Aug-2010

02:59

x86

Mfc90enu.dll

9.0.30729.5054

53,584

20-Aug-2010

01:06

x64

Mfc90enu.dll

9.0.30729.5054

53,584

20-Aug-2010

02:59

x86

Mfc90esn.dll

9.0.30729.5054

61,776

20-Aug-2010

01:06

x64

Mfc90esn.dll

9.0.30729.5054

61,776

20-Aug-2010

02:59

x86

Mfc90esp.dll

9.0.30729.5054

61,776

20-Aug-2010

01:06

x64

Mfc90esp.dll

9.0.30729.5054

61,776

20-Aug-2010

02:59

x86

Mfc90fra.dll

9.0.30729.5054

62,800

20-Aug-2010

01:06

x64

Mfc90fra.dll

9.0.30729.5054

62,800

20-Aug-2010

02:59

x86

Mfc90ita.dll

9.0.30729.5054

61,264

20-Aug-2010

01:06

x64

Mfc90ita.dll

9.0.30729.5054

61,264

20-Aug-2010

02:59

x86

Mfc90jpn.dll

9.0.30729.5054

43,344

20-Aug-2010

01:06

x64

Mfc90jpn.dll

9.0.30729.5054

43,344

20-Aug-2010

02:59

x86

Mfc90kor.dll

9.0.30729.5054

42,832

20-Aug-2010

01:06

x64

Mfc90kor.dll

9.0.30729.5054

42,832

20-Aug-2010

02:59

x86

Mfc90rus.dll

9.0.30729.5054

59,728

20-Aug-2010

01:06

x64

Mfc90rus.dll

9.0.30729.5054

59,728

20-Aug-2010

02:59

x86

Mfc90u.dll

9.0.30729.5054

5,102,408

20-Aug-2010

01:06

x64

Mfc90u.dll

9.0.30729.5054

3,780,424

20-Aug-2010

02:59

x86

Mfc90ud.dll

9.0.30729.5054

7,463,248

20-Aug-2010

01:06

x64

Mfc90ud.dll

9.0.30729.5054

5,979,472

20-Aug-2010

02:59

x86

Mfcm90.dll

9.0.30729.5054

67,072

20-Aug-2010

01:06

x64

Mfcm90.dll

9.0.30729.5054

59,904

20-Aug-2010

03:00

x86

Mfcm90d.dll

9.0.30729.5054

93,184

20-Aug-2010

01:06

x64

Mfcm90d.dll

9.0.30729.5054

80,896

20-Aug-2010

03:00

x86

Mfcm90u.dll

9.0.30729.5054

67,072

20-Aug-2010

01:06

x64

Mfcm90u.dll

9.0.30729.5054

59,904

20-Aug-2010

03:00

x86

Mfcm90ud.dll

9.0.30729.5054

93,696

20-Aug-2010

01:06

x64

Mfcm90ud.dll

9.0.30729.5054

80,896

20-Aug-2010

03:00

x86

Mfcmifc80u.dll

9.0.30729.5054

13,136

20-Aug-2010

23:00

x86

Microsoft.visualc.stlclr.dll

9.0.30729.5054

47,984

20-Aug-2010

23:00

x86

Msvcm90.dll

9.0.30729.5054

245,760

20-Aug-2010

01:06

x64

Msvcm90.dll

9.0.30729.5054

324,096

20-Aug-2010

01:15

IA-64

Msvcm90.dll

9.0.30729.5054

225,280

20-Aug-2010

03:00

x86

Msvcm90d.dll

9.0.30729.5054

333,312

20-Aug-2010

01:06

x64

Msvcm90d.dll

9.0.30729.5054

429,568

20-Aug-2010

01:15

IA-64

Msvcm90d.dll

9.0.30729.5054

312,832

20-Aug-2010

03:00

x86

Msvcp90.dll

9.0.30729.5054

853,328

20-Aug-2010

01:06

x64

Msvcp90.dll

9.0.30729.5054

1,466,192

20-Aug-2010

01:15

IA-64

Msvcp90.dll

9.0.30729.5054

569,680

20-Aug-2010

02:59

x86

Msvcp90d.dll

9.0.30729.5054

1,120,592

20-Aug-2010

01:06

x64

Msvcp90d.dll

9.0.30729.5054

2,515,280

20-Aug-2010

01:15

IA-64

Msvcp90d.dll

9.0.30729.5054

871,760

20-Aug-2010

02:59

x86

Msvcr90.dll

9.0.30729.5054

624,464

20-Aug-2010

01:06

x64

Msvcr90.dll

9.0.30729.5054

1,505,616

20-Aug-2010

01:15

IA-64

Msvcr90.dll

9.0.30729.5054

653,136

20-Aug-2010

02:59

x86

Msvcr90d.dll

9.0.30729.5054

1,350,480

20-Aug-2010

01:06

x64

Msvcr90d.dll

9.0.30729.5054

3,603,280

20-Aug-2010

01:15

IA-64

Msvcr90d.dll

9.0.30729.5054

1,178,448

20-Aug-2010

02:59

x86

Workaround

To work around this problem, assemble a wrapper function that calls an fnclex instruction before the wrapper function calls the fmod function. The following code is an example of how to assemble the wrapper function:
public <Function Name> <Function Name> proc fnclex call fmod ret <Function Name> endp

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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