Re: fpu controlword altered on windows

On Saturday, July 02, 2011 10:07:44 AM Xavier Bouchoux wrote:
> nope.
> the value returned by _controlfp() is the new value *after* applying the
> change. So the saved value that is restored at function exit is actually
> the changed value...
> 
> http://msdn.microsoft.com/en-us/library/e9b52ceh%28VS.71%29.aspx

I see. Going off of Wine's implementation, it returns the previous value. I'll 
have to talk to them about that.

> yeah, that was a bit disturbing indeed. I had to double check the code
> to see what enums I was supposed to use.
> And most problematic, it means that when using the extension, you need
> to querry for the extension in ALC and then expect there are new
> enums/functions in both AL and ALC. (with no "correct" current context
> for AL, as the enums are needed to create it)

FWIW, the enums values are constant (or will be, when the extension is 
finished). You don't need to use al[c]GetEnumValue to get the actual value for 
an enum, except in cases where an extension abuses that to tell what exactly 
is supported (but even then, supported enums have a specific value; it's just 
a hacky way to query support).

The loopback extension has a proper method to query supported formats, so you 
can just use pre-defined macros.
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