malloc a complex<float> in C++ and CUDA

In C++, if I want an array of complex I might do 开发者_JAVA百科something like this:

complex<float> *temp = new complex<float>[size];

Can I change this into a malloc statement?

What about if I want to use cudaMalloc to give me an array on the GPU of complex floats?

thanks

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Can I change this into a malloc statement?

No, but you can change it into a malloc statement with Placement-New. Can't see why you'd want to do that though.

What about if I want to use cudaMalloc to give me an array on the GPU of complex floats?

Again, you'll have to use placement new.

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For Cuda there is the type cuComplex for complex floa values and cuDoubleComplex for double complex values. You can use both in combination with cudaMalloc or cublasAlloc.

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Unless complex has no constructor, no. You should use new when allocating arrays in C++.