libavutil/softfloat.h File Reference

#include <stdint.h>
#include "common.h"

Go to the source code of this file.

Data Structures
struct	SoftFloat
Defines
#define	MIN_EXP   -126
#define	MAX_EXP   126
#define	ONE_BITS   29
Functions
static av_const SoftFloat	av_normalize_sf (SoftFloat a)
static av_const SoftFloat	av_normalize1_sf (SoftFloat a)
static av_const SoftFloat	av_mul_sf (SoftFloat a, SoftFloat b)
static av_const SoftFloat	av_div_sf (SoftFloat a, SoftFloat b)
	b has to be normalized and not zero.
static av_const int	av_cmp_sf (SoftFloat a, SoftFloat b)
static av_const SoftFloat	av_add_sf (SoftFloat a, SoftFloat b)
static av_const SoftFloat	av_sub_sf (SoftFloat a, SoftFloat b)
static av_const SoftFloat	av_int2sf (int v, int frac_bits)
static av_const int	av_sf2int (SoftFloat v, int frac_bits)
	Rounding is to -inf.

---

Define Documentation

#define MAX_EXP   126

Definition at line 28 of file softfloat.h.

#define MIN_EXP   -126

Definition at line 27 of file softfloat.h.

Referenced by av_normalize_sf().

#define ONE_BITS   29

Definition at line 29 of file softfloat.h.

Referenced by av_div_sf(), av_int2sf(), av_mul_sf(), av_normalize_sf(), and av_sf2int().

---

Function Documentation

static av_const SoftFloat av_add_sf	(	SoftFloat	a,
		SoftFloat	b
	)			[inline, static]

Definition at line 101 of file softfloat.h.

Referenced by av_sub_sf(), and main().

static av_const int av_cmp_sf	(	SoftFloat	a,
		SoftFloat	b
	)			[inline, static]

Definition at line 95 of file softfloat.h.

static av_const SoftFloat av_div_sf	(	SoftFloat	a,
		SoftFloat	b
	)			[static]

b has to be normalized and not zero.

Returns:

Will not be more denormalized than a.

Definition at line 89 of file softfloat.h.

Referenced by main().

static av_const SoftFloat av_int2sf	(	int	v,
		int	frac_bits
	)			[inline, static]

Definition at line 113 of file softfloat.h.

Referenced by main().

static av_const SoftFloat av_mul_sf	(	SoftFloat	a,
		SoftFloat	b
	)			[inline, static]

Returns:

Will not be more denormalized than a+b. So if either input is normalized, then the output will not be worse then the other input. If both are normalized, then the output will be normalized.

Definition at line 79 of file softfloat.h.

Referenced by main().

static av_const SoftFloat av_normalize1_sf

(

SoftFloat

a

)

[inline, static]

Definition at line 58 of file softfloat.h.

Referenced by av_add_sf(), av_div_sf(), and av_mul_sf().

static av_const SoftFloat av_normalize_sf

(

SoftFloat

a

)

[static]

Definition at line 36 of file softfloat.h.

Referenced by av_int2sf(), and main().

static av_const int av_sf2int	(	SoftFloat	v,
		int	frac_bits
	)			[inline, static]

Rounding is to -inf.

Definition at line 120 of file softfloat.h.

Referenced by main().

static av_const SoftFloat av_sub_sf	(	SoftFloat	a,
		SoftFloat	b
	)			[inline, static]

Definition at line 107 of file softfloat.h.