Gray::cFloat32 Class Reference

#include <cFloat.h>

Inheritance diagram for Gray::cFloat32:

Public Member Functions
	cFloat32 () noexcept
	cFloat32 (float f) noexcept
void	put_Bits (UINT32 dw) noexcept
UINT32	get_Mantissa () const noexcept

Static Public Member Functions
static UINT32	toBits (float src) noexcept
static float	fromBits (UINT32 src) noexcept

Public Attributes
cUnion32	m_v
	holds the float32. More...

Static Public Attributes
static const UINT32	k_uOne = 0x3f800000
	(UINT32) = float 1.0f (8 bit exponent) More...
static const UINT32	k_uTwo = 0x40000000
	(UINT32) = float 2.0f More...
static const UINT32	k_SIGN_MASK = 0x80000000
	1 bit = value sign (Sign_bit) More...
static const UINT32	k_EXP_MASK = 0x7f800000
	8 bits = signed exponent (base 2) More...
static const UINT32	k_MANT_MASK = 0x007fffff
	23 bits = fractional mantissa = FLT_MANT_DIG More...
static const UINT32	k_MANT_BITS = 23
	23 bits = fractional mantissa = FLT_MANT_DIG More...

Friends
class	cFloatTests

Detailed Description

pack/unpack IEEE float32/float http://en.wikipedia.org/wiki/IEEE_754-1985 Use FLT_MAX

Constructor & Destructor Documentation

cFloat32() [1/2]

Gray::cFloat32::cFloat32 ( )

inlinenoexcept

cFloat32() [2/2]

Gray::cFloat32::cFloat32 ( float  f )

inlinenoexcept

Member Function Documentation

fromBits()

static float Gray::cFloat32::fromBits ( UINT32  src )

inlinestaticnoexcept

reinterpret an UINT32 as a float assuming IEEE 32 Warning in GNUC reinterpret_ warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

get_Mantissa()

UINT32 Gray::cFloat32::get_Mantissa ( ) const

inlinenoexcept

put_Bits()

void Gray::cFloat32::put_Bits ( UINT32  dw )

inlinenoexcept

toBits()

static UINT32 Gray::cFloat32::toBits ( float  src )

inlinestaticnoexcept

reinterpret a float as an UINT32 assuming IEEE 32 Warning in GNUC reinterpret_ warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

Friends And Related Function Documentation

cFloatTests

friend class cFloatTests

friend

Member Data Documentation

k_EXP_MASK

const UINT32 Gray::cFloat32::k_EXP_MASK = 0x7f800000

static

8 bits = signed exponent (base 2)

k_MANT_BITS

const UINT32 Gray::cFloat32::k_MANT_BITS = 23

static

23 bits = fractional mantissa = FLT_MANT_DIG

k_MANT_MASK

const UINT32 Gray::cFloat32::k_MANT_MASK = 0x007fffff

static

23 bits = fractional mantissa = FLT_MANT_DIG

k_SIGN_MASK

const UINT32 Gray::cFloat32::k_SIGN_MASK = 0x80000000

static

1 bit = value sign (Sign_bit)

k_uOne

const UINT32 Gray::cFloat32::k_uOne = 0x3f800000

static

(UINT32) = float 1.0f (8 bit exponent)

k_uTwo

const UINT32 Gray::cFloat32::k_uTwo = 0x40000000

static

(UINT32) = float 2.0f

m_v

cUnion32 Gray::cFloat32::m_v

holds the float32.

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The documentation for this class was generated from the following file:

• c:/Dennis/Source/Gray/GrayCore/include/cFloat.h