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)
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)