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The form of decoration for a C function depends on the calling convention used in its declaration, as shown below. Note that in a 64-bit environment, functions are not decorated.
Calling convention |
Decoration |
|---|---|
__cdecl (the default) |
Leading underscore (_) |
__stdcall |
Leading underscore (_) and a trailing at sign (@) followed by a number representing the number of bytes in the parameter list |
__fastcall |
Same as __stdcall, but prepended by an at sign instead of an underscore |
__vectorcall |
Two trailing at signs (@@) followed by the decimal number of bytes in the parameter list. |