FloatIEEE754

#include "mathutils.hh"

Public Attributes
char	chars [4]
struct {
uint   biased_exponent: 8
uint   mantissa: 23
uint   sign: 1
}	mpn
float	v_float

Static Public Attributes
static constexpr const int	BIAS
static constexpr const float	EPSILON
static constexpr const float	FMAX
static constexpr const float	FMIN
static constexpr const float	SMAX
static constexpr const float	SMIN

Detailed Description

Union to compartmentalize an IEEE-754 float. IEEE 754 single precision floating point layout: ``` 31 30 23 22 0 +——–+—————+—————+ | s 1bit | e[30:23] 8bit | f[22:0] 23bit | +——–+—————+—————+ B0——————->B1——->B2–>B3–> ```

Member Data Documentation

v_float

float v_float

mantissa

uint mantissa

biased_exponent

uint biased_exponent

sign

uint sign

[struct]

struct { ... } mpn

chars

char chars[4]

EPSILON

constexpr const float EPSILON

staticconstexpr

2^-24, round-off error at 1.0

BIAS

constexpr const int BIAS

staticconstexpr

Exponent bias.

FMAX

constexpr const float FMAX

staticconstexpr

0x7f7fffff, 2^128 * (1 - epsilon)

FMIN

constexpr const float FMIN

staticconstexpr

0x00800000 Minimum Normal

SMAX

constexpr const float SMAX

staticconstexpr

0x007fffff Maximum Subnormal

SMIN

constexpr const float SMIN

staticconstexpr

0x00000001 Minimum Subnormal