dsps_mulc_s16_ansi.c File Reference

#include "dsps_mulc.h"

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Functions
esp_err_t	dsps_mulc_s16_ansi (const int16_t *input, int16_t *output, int len, int16_t C, int step_in, int step_out)

Function Documentation

dsps_mulc_s16_ansi()

esp_err_t dsps_mulc_s16_ansi	(	const int16_t *	input,
		int16_t *	output,
		int	len,
		int16_t	C,
		int	step_in,
		int	step_out )

Definition at line 17 of file dsps_mulc_s16_ansi.c.

{
    if (NULL == input) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (NULL == output) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
 
    for (int i = 0 ; i < len ; i++) {
        int32_t acc = (int32_t)input[i * step_in] * (int32_t)C;
        output[i * step_out] = (int16_t)(acc >> 15);
    }
    return ESP_OK;
}

References C, ESP_ERR_DSP_PARAM_OUTOFRANGE, and ESP_OK.