extern __constant__ complexf cTest int main complexf h_cii1 cudaMemcpy

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extern __constant__ complexf cTest;
int main()
{
...
complexf h_cii1(2.0, 2.0);
cudaMemcpyToSymbol("cTest", &h_cii1, sizeof(complexf), size_t(0), cudaMemcpyHostToDevice);
...
}