Basic math functions

Functions
arm_status	arm_elementwise_add_s8 (const int8_t *input_1_vect, const int8_t *input_2_vect, const int32_t input_1_offset, const int32_t input_1_mult, const int32_t input_1_shift, const int32_t input_2_offset, const int32_t input_2_mult, const int32_t input_2_shift, const int32_t left_shift, int8_t *output, const int32_t out_offset, const int32_t out_mult, const int32_t out_shift, const int32_t out_activation_min, const int32_t out_activation_max, const uint32_t block_size)
	s8 element wise add of two vectors More...
arm_status	arm_elementwise_mul_s8 (const int8_t *input_1_vect, const int8_t *input_2_vect, const int32_t input_1_offset, const int32_t input_2_offset, int8_t *output, const int32_t out_offset, const int32_t out_mult, const int32_t out_shift, const int32_t out_activation_min, const int32_t out_activation_max, const uint32_t block_size)
	s8 element wise multiplication of two vectors More...

Description

Element wise add and multiplication functions.

Function Documentation

arm_status arm_elementwise_add_s8	(	const int8_t *	input_1_vect,
		const int8_t *	input_2_vect,
		const int32_t	input_1_offset,
		const int32_t	input_1_mult,
		const int32_t	input_1_shift,
		const int32_t	input_2_offset,
		const int32_t	input_2_mult,
		const int32_t	input_2_shift,
		const int32_t	left_shift,
		int8_t *	output,
		const int32_t	out_offset,
		const int32_t	out_mult,
		const int32_t	out_shift,
		const int32_t	out_activation_min,
		const int32_t	out_activation_max,
		const uint32_t	block_size
	)

Parameters

[in]	input_1_vect	pointer to input vector 1
[in]	input_2_vect	pointer to input vector 2
[in]	input_1_offset	offset for input 1. Range: Range: -127 to 128
[in]	input_1_mult	multiplier for input 1
[in]	input_1_shift	shift for input 1
[in]	input_2_offset	offset for input 2. Range: Range: -127 to 128
[in]	input_2_mult	multiplier for input 2
[in]	input_2_shift	shift for input 2
[in]	left_shift	input left shift
[in,out]	output	pointer to output vector
[in]	out_offset	output offset
[in]	out_mult	output multiplier
[in]	out_shift	output shift
[in]	out_activation_min	minimum value to clamp output to
[in]	out_activation_max	maximum value to clamp output to
[in]	block_size	number of samples

Returns

The function returns ARM_MATH_SUCCESS

References arm_nn_divide_by_power_of_two(), arm_nn_doubling_high_mult(), MAX, MIN, and SAT_INPUT.

arm_status arm_elementwise_mul_s8	(	const int8_t *	input_1_vect,
		const int8_t *	input_2_vect,
		const int32_t	input_1_offset,
		const int32_t	input_2_offset,
		int8_t *	output,
		const int32_t	out_offset,
		const int32_t	out_mult,
		const int32_t	out_shift,
		const int32_t	out_activation_min,
		const int32_t	out_activation_max,
		const uint32_t	block_size
	)

s8 element wise multiplication

Note

Refer header file for details.

References arm_nn_requantize(), MAX, and MIN.