volk_32f_log2_32f.h File Reference

#include <inttypes.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <arm_neon.h>

Go to the source code of this file.

Macros
#define	LOG_POLY_DEGREE   6
#define	VLOG2Q_NEON_PREAMBLE()
#define	VLOG2Q_NEON_F32(log2_approx, aval)
#define	INCLUDED_volk_32f_log2_32f_u_H

Functions
static void	volk_32f_log2_32f_generic (float *bVector, const float *aVector, unsigned int num_points)
static void	volk_32f_log2_32f_neon (float *bVector, const float *aVector, unsigned int num_points)
static void	volk_32f_log2_32f_u_generic (float *bVector, const float *aVector, unsigned int num_points)

Macro Definition Documentation

INCLUDED_volk_32f_log2_32f_u_H

#define INCLUDED_volk_32f_log2_32f_u_H

LOG_POLY_DEGREE

#define LOG_POLY_DEGREE   6

VLOG2Q_NEON_F32

#define VLOG2Q_NEON_F32	(		log2_approx,
			aval
	)

VLOG2Q_NEON_PREAMBLE

#define VLOG2Q_NEON_PREAMBLE

(

)

Value:

    int32x4_t one = vdupq_n_s32(0x000800000);          \
    /* minimax polynomial */                           \
    float32x4_t p0 = vdupq_n_f32(-3.0400402727048585); \
    float32x4_t p1 = vdupq_n_f32(6.1129631282966113);  \
    float32x4_t p2 = vdupq_n_f32(-5.3419892024633207); \
    float32x4_t p3 = vdupq_n_f32(3.2865287703753912);  \
    float32x4_t p4 = vdupq_n_f32(-1.2669182593441635); \
    float32x4_t p5 = vdupq_n_f32(0.2751487703421256);  \
    float32x4_t p6 = vdupq_n_f32(-0.0256910888150985); \
    int32x4_t exp_mask = vdupq_n_s32(0x7f800000);      \
    int32x4_t sig_mask = vdupq_n_s32(0x007fffff);      \
    int32x4_t exp_bias = vdupq_n_s32(127);

Function Documentation

volk_32f_log2_32f_generic()

static void volk_32f_log2_32f_generic ( float *  bVector, const float *  aVector, unsigned int  num_points  )

inlinestatic

volk_32f_log2_32f_neon()

static void volk_32f_log2_32f_neon ( float *  bVector, const float *  aVector, unsigned int  num_points  )

inlinestatic

volk_32f_log2_32f_u_generic()

static void volk_32f_log2_32f_u_generic ( float *  bVector, const float *  aVector, unsigned int  num_points  )

inlinestatic