nrf_dsp_lrp.h

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/*
 * Copyright (c) 2026 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#ifndef _NRF_DSP_STAT_LRP_FUNCTIONS_H_
#define _NRF_DSP_STAT_LRP_FUNCTIONS_H_
 
#include <nrf_edgeai/dsp/nrf_dsp_types.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct nrf_dsp_linear_reg_params_f32_s
{
    /* Slope of linear regression */
    flt32_t slope;
 
    /* Intercept of linear regression */
    flt32_t intercept;
} nrf_dsp_linear_reg_params_f32_t;
 
typedef struct nrf_dsp_linear_reg_params_i16_s
{
    /* Slope of linear regression */
    int32_t slope;
 
    /* Intercept of linear regression */
    int32_t intercept;
} nrf_dsp_linear_reg_params_i16_t;
 
typedef struct nrf_dsp_linear_reg_params_i8_s
{
    /* Slope of linear regression */
    int16_t slope;
 
    /* Intercept of linear regression */
    int16_t intercept;
} nrf_dsp_linear_reg_params_i8_t;
 
void nrf_dsp_lrp_f32(const flt32_t*                   p_input,
                     uint16_t                         num,
                     nrf_dsp_linear_reg_params_f32_t* p_params,
                     nrf_dsp_stat_ctx_f32_t*          p_ctx);
 
void nrf_dsp_lrp_i16(const int16_t*                   p_input,
                     uint16_t                         num,
                     nrf_dsp_linear_reg_params_i16_t* p_params,
                     nrf_dsp_stat_ctx_i16_t*          p_ctx);
 
void nrf_dsp_lrp_i8(const int8_t*                   p_input,
                    uint16_t                        num,
                    nrf_dsp_linear_reg_params_i8_t* p_params,
                    nrf_dsp_stat_ctx_i8_t*          p_ctx);
#ifdef __cplusplus
}
#endif
 
#endif /* _NRF_DSP_STAT_LRP_FUNCTIONS_H_ */