nrf_axon_xspys_24_24_24_input_stride2()

nrf_axon_result_e nrf_axon_xspys_24_24_24_input_stride2	(	const int32_t *	x_ptr,
		const int32_t *	y_ptr,
		int32_t *	out_ptr,
		uint16_t	length,
		uint8_t	rounding_bits,
		nrf_axon_syncmode_blocking_e	block_mode,
		bool	keep_reservation )

"Xspys"=>"X Squared Plus Y Squared" adds the square of vector Y to the square of vector X. input_stride2 indicates that the input vectors will skip every other entry. This is useful for calculating fft power, as the x vector can be the real components, and the y vector can by the imaginary components.

Parameters

x_ptr	x vector input. 24bit integers unpacked.
y_ptr	y vector input. 24bit integers unpacked.
out_ptr	output vector. 24bit integers unpacked, no extra stride, and rounded by rounding_bits. output can overlap either or both inputs.
length	Number of elements in the vectors (data samples). Must be a multiple of 2, at least 4, and no greater than 512. Does not include the stride.
rounding_bits	Number of bits to round the output by. 0 => no rounding, maximum of 31.

Returns

kAxonResultSuccess on success or a negative error code (see nrf_axon_result_e)