Edge AI Add-on API 2.2.0
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nrf_dsp_scr.h
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1/*
2 * Copyright (c) 2026 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
5 */
15#ifndef _NRF_DSP_STAT_SCR_FUNCTIONS_H_
16#define _NRF_DSP_STAT_SCR_FUNCTIONS_H_
17
18#include <nrf_edgeai/dsp/nrf_dsp_types.h>
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
35flt32_t nrf_dsp_scr_f32(const flt32_t* p_input,
36 uint16_t num,
37 nrf_dsp_sigma_factor_t sigma_factor,
38 nrf_dsp_stat_ctx_f32_t* p_ctx);
39
52flt32_t nrf_dsp_scr_f32_s(const flt32_t* p_input,
53 uint16_t num,
54 nrf_dsp_sigma_factor_t sigma_factor,
55 size32_t stride,
56 nrf_dsp_stat_ctx_f32_t* p_ctx);
57
69int16_t nrf_dsp_scr_i8(const int8_t* p_input,
70 uint16_t num,
71 nrf_dsp_sigma_factor_t sigma_factor,
72 nrf_dsp_stat_ctx_i8_t* p_ctx);
73
86int16_t nrf_dsp_scr_i8_s(const int8_t* p_input,
87 uint16_t num,
88 nrf_dsp_sigma_factor_t sigma_factor,
89 size32_t stride,
90 nrf_dsp_stat_ctx_i8_t* p_ctx);
91
103int16_t nrf_dsp_scr_i16(const int16_t* p_input,
104 uint16_t num,
105 nrf_dsp_sigma_factor_t sigma_factor,
106 nrf_dsp_stat_ctx_i16_t* p_ctx);
107
120int16_t nrf_dsp_scr_i16_s(const int16_t* p_input,
121 uint16_t num,
122 nrf_dsp_sigma_factor_t sigma_factor,
123 size32_t stride,
124 nrf_dsp_stat_ctx_i16_t* p_ctx);
125
126#ifdef __cplusplus
127}
128#endif
129
130#endif /* _NRF_DSP_STAT_SCR_FUNCTIONS_H_ */
131
nrf_dsp_scr_i16_s
int16_t nrf_dsp_scr_i16_s(const int16_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, size32_t stride, nrf_dsp_stat_ctx_i16_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a INT16 fixed-point vector ​​using values ​​in in...
nrf_dsp_scr_i8
int16_t nrf_dsp_scr_i8(const int8_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, nrf_dsp_stat_ctx_i8_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a INT8 fixed-point vector.
nrf_dsp_scr_f32
flt32_t nrf_dsp_scr_f32(const flt32_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, nrf_dsp_stat_ctx_f32_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a floating-point vector.
nrf_dsp_scr_f32_s
flt32_t nrf_dsp_scr_f32_s(const flt32_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, size32_t stride, nrf_dsp_stat_ctx_f32_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a floating-point vector ​​using values ​​in incre...
nrf_dsp_scr_i8_s
int16_t nrf_dsp_scr_i8_s(const int8_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, size32_t stride, nrf_dsp_stat_ctx_i8_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a INT8 fixed-point vector ​​using values ​​in inc...
nrf_dsp_scr_i16
int16_t nrf_dsp_scr_i16(const int16_t *p_input, uint16_t num, nrf_dsp_sigma_factor_t sigma_factor, nrf_dsp_stat_ctx_i16_t *p_ctx)
Counts Sigma-crossing rate with respect to Mean, of a INT16 fixed-point vector.
nrf_dsp_sigma_factor_t
enum nrf_dsp_sigma_factor_e nrf_dsp_sigma_factor_t
Sigma(STD) factor for calculation sigma related features, can be positive or negative.
nrf_dsp_types.h
size32_t
size_t size32_t
Architecture 32-bit size_t type definition.
Definition nrf_edgeai_ctypes.h:31
flt32_t
float flt32_t
32-bit floating-point type definition.
Definition nrf_edgeai_ctypes.h:21
nrf_dsp_stat_ctx_f32_s
Floating-point statistics reusable context, in which is used to store derived or intermediate metrics...
Definition nrf_dsp_types.h:85
nrf_dsp_stat_ctx_i16_s
INT16 statistics reusable context, in which is used to store derived or intermediate metrics to simpl...
Definition nrf_dsp_types.h:146
nrf_dsp_stat_ctx_i8_s
INT8 statistics reusable context, in which is used to store derived or intermediate metrics to simpli...
Definition nrf_dsp_types.h:125