filt_dsp16_lpfirdesign.c File Reference

#include "dsp.h"

Macros
#define	DSP16_MUL_TO_DSP32(num1, num2)
#define	DSP32_DIV_TO_DSP16(num1, num2)

Functions
void	dsp16_filt_lpfirdesign (dsp16_t *c, int fc, int fs, int order)
	16-bit fixed point version of the low-pass FIR filter design. More...
void	dsp16_filt_lpfirdesign_windowed_sinc (dsp16_t *c, int fc_hz, int fs_hz, int order)
	Scilab algorithm: More...

#define DSP16_MUL_TO_DSP32	(		num1,
			num2
	)

Value:

((DSP32_QB > DSP16_QB*2)? \
  ((((S32) (num1)) * ((S32) (num2))) << (DSP32_QB - DSP16_QB*2)) \
  :((((S32) (num1)) * ((S32) (num2))) >> (DSP16_QB*2 - DSP32_QB)))

Referenced by dsp16_filt_lpfirdesign().

#define DSP32_DIV_TO_DSP16	(		num1,
			num2
	)

Value:

((DSP32_QB > DSP16_QB*2)? \
  (((num1) >> (DSP32_QB - DSP16_QB*2)) / ((S32) (num2))) \
  :(((num1) << (DSP16_QB*2 - DSP32_QB)) / ((S32) (num2))))

Referenced by dsp16_filt_lpfirdesign().