nrf_dsp_moments.h

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/*
 * Copyright (c) 2026 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#ifndef _NRF_DSP_STAT_MOMENTS_FUNCTIONS_H_
#define _NRF_DSP_STAT_MOMENTS_FUNCTIONS_H_
 
#include <nrf_edgeai/dsp/nrf_dsp_types.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef union nrf_dsp_moments_f32_u
{
    struct
    {
        flt32_t var;
        flt32_t skew;
        flt32_t kur;
    } moment;
 
    flt32_t moments[3U];
} nrf_dsp_moments_f32_t;
 
typedef union nrf_dsp_moments_i8_u
{
    struct
    {
        int16_t var;
        int16_t skew;
        int16_t kur;
    } moment;
 
    int16_t moments[3U];
} nrf_dsp_moments_i8_t;
 
typedef union nrf_dsp_moments_i16_u
{
    struct
    {
        int32_t var;
        int32_t skew;
        int32_t kur;
    } moment;
 
    int32_t moments[3U];
} nrf_dsp_moments_i16_t;
 
void nrf_dsp_moments_f32(const flt32_t*          p_input,
                         uint16_t                num,
                         nrf_dsp_stat_ctx_f32_t* p_ctx,
                         nrf_dsp_moments_f32_t*  p_m);
 
void nrf_dsp_moments_f32_s(const flt32_t*          p_input,
                           uint16_t                num,
                           size32_t                stride,
                           nrf_dsp_stat_ctx_f32_t* p_ctx,
                           nrf_dsp_moments_f32_t*  p_m);
 
void nrf_dsp_moments_i8(const int8_t*          p_input,
                        uint16_t               num,
                        nrf_dsp_stat_ctx_i8_t* p_ctx,
                        nrf_dsp_moments_i8_t*  p_m);
 
void nrf_dsp_moments_i16(const int16_t*          p_input,
                         uint16_t                num,
                         nrf_dsp_stat_ctx_i16_t* p_ctx,
                         nrf_dsp_moments_i16_t*  p_m);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _NRF_DSP_STAT_MOMENTS_FUNCTIONS_H_ */