make_real          99 apps/fft/main.cpp         ComplexFunc dft_in = fft2d_r2c(make_real(in), W, H, target, fwd_desc);
make_real         100 apps/fft/main.cpp         ComplexFunc dft_kernel = fft2d_r2c(make_real(kernel), W, H, target, fwd_desc);