| Re: [eigen] FFT for Eigen |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] FFT for Eigen
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Tue, 19 May 2009 22:41:01 +0200
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>> Really? The only real() that I can see is const, and anyway, how would
>> we implement that? std::real() and std::imag() only return references
>> with certain GCC implementations while e.g. on GCC 4.0 / Mac they
>> return by value.
>>
>> It seemed to me that allowing that was one of the things that would
>> require us to have our own complex numbers class.
>
> arf, you are right., one more stupid annoying std limitation....
>
ok, so, is anyone against adding that:
inline float& ei_real(std::complex<float>& x) { return
reinterpret_cast<float*>(&x)[0]; }
inline float& ei_imag(std::complex<float>& x) { return
reinterpret_cast<float*>(&x)[1]; }
so that we can have real() returning a lvalue ?
Gael.