softfloat_ieee754.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	SoftFloat_IEEE754

Macros
#define	EXP_BIAS   127
#define	MANT_BITS   23

Functions
static SoftFloat_IEEE754	av_normalize_sf_ieee754 (SoftFloat_IEEE754 sf)
	Normalize the softfloat as defined by IEEE 754 single-recision floating point specification. More...
static SoftFloat_IEEE754	av_int2sf_ieee754 (int64_t n, int e)
	Convert integer to softfloat. More...
static SoftFloat_IEEE754	av_bits2sf_ieee754 (uint32_t n)
	Make a softfloat out of the bitstream. More...
static int	av_sf2int_ieee754 (SoftFloat_IEEE754 a)
	Convert the softfloat to integer. More...
static SoftFloat_IEEE754	av_div_sf_ieee754 (SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
	Divide a by b. More...
static SoftFloat_IEEE754	av_mul_sf_ieee754 (SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
	Multiply a with b return normalized result. More...
static int	av_cmp_sf_ieee754 (SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
	Compare a with b strictly. More...

Variables
static const SoftFloat_IEEE754	FLOAT_0 = {0, 0, -126}
static const SoftFloat_IEEE754	FLOAT_1 = {0, 0, 0}

Macro Definition Documentation

EXP_BIAS

#define EXP_BIAS   127

Definition at line 26 of file softfloat_ieee754.h.

Referenced by read_diff_float_data().

MANT_BITS

#define MANT_BITS   23

Definition at line 27 of file softfloat_ieee754.h.

Referenced by av_div_sf_ieee754(), av_int2sf_ieee754(), and av_mul_sf_ieee754().

Function Documentation

av_normalize_sf_ieee754()

static SoftFloat_IEEE754 av_normalize_sf_ieee754 ( SoftFloat_IEEE754  sf )

inlinestatic

Normalize the softfloat as defined by IEEE 754 single-recision floating point specification.

Definition at line 41 of file softfloat_ieee754.h.

Referenced by av_cmp_sf_ieee754(), av_div_sf_ieee754(), av_int2sf_ieee754(), and av_mul_sf_ieee754().

av_int2sf_ieee754()

static SoftFloat_IEEE754 av_int2sf_ieee754 ( int64_t  n, int  e  )

inlinestatic

Convert integer to softfloat.

Returns

softfloat with value n * 2^e

Definition at line 53 of file softfloat_ieee754.h.

Referenced by read_diff_float_data().

av_bits2sf_ieee754()

static SoftFloat_IEEE754 av_bits2sf_ieee754 ( uint32_t  n )

inlinestatic

Make a softfloat out of the bitstream.

Assumes the bits are in the form as defined by the IEEE 754 spec.

Definition at line 66 of file softfloat_ieee754.h.

Referenced by multiply(), and read_diff_float_data().

av_sf2int_ieee754()

static int av_sf2int_ieee754 ( SoftFloat_IEEE754  a )

inlinestatic

Convert the softfloat to integer.

Definition at line 72 of file softfloat_ieee754.h.

av_div_sf_ieee754()

static SoftFloat_IEEE754 av_div_sf_ieee754 ( SoftFloat_IEEE754  a, SoftFloat_IEEE754  b  )

inlinestatic

Divide a by b.

b should not be zero.

Returns

normalized result

Definition at line 80 of file softfloat_ieee754.h.

Referenced by read_diff_float_data().

av_mul_sf_ieee754()

static SoftFloat_IEEE754 av_mul_sf_ieee754 ( SoftFloat_IEEE754  a, SoftFloat_IEEE754  b  )

inlinestatic

Multiply a with b return normalized result.

Definition at line 93 of file softfloat_ieee754.h.

av_cmp_sf_ieee754()

static int av_cmp_sf_ieee754 ( SoftFloat_IEEE754  a, SoftFloat_IEEE754  b  )

inlinestatic

Compare a with b strictly.

Returns

1 if the a and b are equal, 0 otherwise.

Definition at line 106 of file softfloat_ieee754.h.

Referenced by read_diff_float_data().

Variable Documentation

FLOAT_0

const SoftFloat_IEEE754 FLOAT_0 = {0, 0, -126}

static

Definition at line 35 of file softfloat_ieee754.h.

FLOAT_1

const SoftFloat_IEEE754 FLOAT_1 = {0, 0, 0}

static

Definition at line 36 of file softfloat_ieee754.h.