dspm_sub.h File Reference

#include "dsp_err.h"
#include "dspm_sub_platform.h"

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Macros
#define	dspm_sub_f32   dspm_sub_f32_ansi

Functions
esp_err_t	dspm_sub_f32_ansi (const float *input1, const float *input2, float *output, int rows, int cols, int padd1, int padd2, int padd_out, int step1, int step2, int step_out)
	subtracts two arrays with paddings (subtracts two sub-matrices)
esp_err_t	dspm_sub_f32_ae32 (const float *input1, const float *input2, float *output, int rows, int cols, int padd1, int padd2, int padd_out, int step1, int step2, int step_out)

Macro Definition Documentation

dspm_sub_f32

#define dspm_sub_f32   dspm_sub_f32_ansi

Definition at line 58 of file dspm_sub.h.

Referenced by dspm::operator-(), and dspm::Mat::operator-=().

Function Documentation

dspm_sub_f32_ae32()

esp_err_t dspm_sub_f32_ae32	(	const float *	input1,
		const float *	input2,
		float *	output,
		int	rows,
		int	cols,
		int	padd1,
		int	padd2,
		int	padd_out,
		int	step1,
		int	step2,
		int	step_out )

dspm_sub_f32_ansi()

esp_err_t dspm_sub_f32_ansi	(	const float *	input1,
		const float *	input2,
		float *	output,
		int	rows,
		int	cols,
		int	padd1,
		int	padd2,
		int	padd_out,
		int	step1,
		int	step2,
		int	step_out )

subtracts two arrays with paddings (subtracts two sub-matrices)

The function subtracts two arrays defined as sub-matrices with paddings out[row * ptr_step_out + col * step_out] = in1[row * ptr_step_in1 + col * step1] - in2[row * ptr_step_in2 + col * step2]; The implementation use ANSI C and could be compiled and run on any platform

Parameters

[in]	input1	input array 1
[in]	input2	input array 2
[out]	output	output array
[in]	rows	matrix rows
[in]	cols	matrix cols
[in]	padd1	input array 1 padding
[in]	padd2	input array 2 padding
[in]	padd_out	output array padding
[in]	step1	step over input array 1 (by default should be 1)
[in]	step2	step over input array 2 (by default should be 1)
[in]	step_out	step over output array (by default should be 1)

Returns

• ESP_OK on success
• One of the error codes from DSP library

Definition at line 9 of file dspm_sub_f32_ansi.c.

{
    if (NULL == input1) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (NULL == input2) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (NULL == output) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
 
    if (rows <= 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (cols <= 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
 
    if (padd1 < 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (padd2 < 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (padd_out < 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
 
    if (step1 <= 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (step2 <= 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (step_out <= 0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
 
    const int ptr_input1_step = cols + padd1;
    const int ptr_input2_step = cols + padd2;
    const int ptr_out_step = cols + padd_out;
    float *ptr_input1 = (float *)input1;
    float *ptr_input2 = (float *)input2;
 
    for (int row = 0; row < rows; row++) {
        for (int col = 0; col < cols; col++) {
            output[col * step_out] = ptr_input1[col * step1] - ptr_input2[col * step2];
        }
        ptr_input1 += ptr_input1_step;
        ptr_input2 += ptr_input2_step;
        output += ptr_out_step;
    }
    return ESP_OK;
}

References ESP_ERR_DSP_PARAM_OUTOFRANGE, and ESP_OK.