make_chirp(global complex * chirp, const int shape_x, const int shape_y, const int shape_z) -> kernel void
reciprocal_chirp(global const complex * chirp, const int dir, const int fft_shape_x, const int fft_shape_y, const int fft_shape_z, global complex * ichirp) -> kernel void
multiply_1(global const complex * x, global const complex * chirp, const int dir, const int fft_shape_x, const int fft_shape_y, const int fft_shape_z, global complex * xp) -> kernel void
multiply_3(global const complex * ichirp, global const complex * chirp, global complex * x, const int fft_shape_x, const int fft_shape_y, const int fft_shape_z, const T scale) -> kernel void