public static extern af_err af_convolve2_sep(out IntPtr array_out, IntPtr array_col_filter, IntPtr array_row_filter, IntPtr array_signal, af_conv_mode mode);
public static extern af_err af_fft_convolve3(out IntPtr array_out, IntPtr array_signal, IntPtr array_filter, af_conv_mode mode);
public static extern af_err af_convolve2(out IntPtr array_out, IntPtr array_signal, IntPtr array_filter, af_conv_mode mode, af_conv_domain domain);