[19:48:23.40} C:\test>cl float.c /Fefloatv8.exe
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
Copyright (C) Microsoft Corporation.  All rights reserved.

float.c
Microsoft (R) Incremental Linker Version 9.00.30729.01
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:floatv8.exe
float.obj

[19:49:59.60} C:\test>floatv8
False True

----------------------------------------------------
c:\test>cl float.c /Fefloatv6.exe
Microsoft (R) 32-bit C/C++ Standard Compiler Version 13.00.9466 for 80x86
Copyright (C) Microsoft Corporation 1984-2001. All rights reserved.

float.c
Microsoft (R) Incremental Linker Version 7.00.9466
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:floatv6.exe
float.obj

c:\test>floatv6
False True