Keyword _Imaginary in C99 standard and in GCC

[Yao qi]

>From: Andrew Pinski <pinskia@physics.uc.edu>
>To: "Yao qi" <qiyaobit@hotmail.com>
>CC: gcc@gcc.gnu.org
>Subject: Re: Keyword _Imaginary in C99 standard and in GCC
>Date: Thu, 18 Aug 2005 23:07:49 -0400
>
>
>On Aug 18, 2005, at 11:04 PM, Yao qi wrote:
>
>>Hi, everyone,
>>I have looked through C99 standard, in 6.4.1 Keywords,  "_Imaginary" is 
>>mentioned as a keyword in this standard.  However, it seems that GCC can 
>>not recognize it,  report error: '_Imaginary' undeclared.  I also search 
>>it in GCC info, there is no spot mentioned that.  Maybe GCC does not 
>>include it as a keyword, I am not sure about that, am I missing something? 
>>  Maybe someone of you could clarify for me.  Thanks in advance.
>
>_Imaginary types are not implemented yet in GCC.
>
>-- Pinski
>
Thanks.  That means GCC has not fully support C99, just partialy, am I 
right?  I want to continue a question further, could you tell me where can I 
find a document about GCC's coverage in C99, if any?  If there is no such 
document, I just have to collect these information by hand.

Best Regards
----------------
Yao Qi
Bejing Institute of Technology

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