APFloat.cpp File Reference

#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/MathExtras.h"
#include <limits.h>
#include <cstring>

Classes
struct	llvm::fltSemantics
struct	decimalInfo
Namespaces
namespace	llvm
namespace	anonymous_namespace{APFloat.cpp}
Defines
#define	convolve(lhs, rhs)   ((lhs) * 4 + (rhs))
#define	COMPILE_TIME_ASSERT(cond)   extern int CTAssert[(cond) ? 1 : -1]
Functions
	COMPILE_TIME_ASSERT (integerPartWidth%4==0)
static unsigned int	partCountForBits (unsigned int bits)
static unsigned int	decDigitValue (unsigned int c)
static unsigned int	hexDigitValue (unsigned int c)
static void	assertArithmeticOK (const llvm::fltSemantics &semantics)
static int	readExponent (StringRef::iterator begin, StringRef::iterator end)
static int	totalExponent (StringRef::iterator p, StringRef::iterator end, int exponentAdjustment)
static StringRef::iterator	skipLeadingZeroesAndAnyDot (StringRef::iterator begin, StringRef::iterator end, StringRef::iterator *dot)
static void	interpretDecimal (StringRef::iterator begin, StringRef::iterator end, decimalInfo *D)
static lostFraction	trailingHexadecimalFraction (StringRef::iterator p, StringRef::iterator end, unsigned int digitValue)
static lostFraction	lostFractionThroughTruncation (const integerPart *parts, unsigned int partCount, unsigned int bits)
static lostFraction	shiftRight (integerPart *dst, unsigned int parts, unsigned int bits)
static lostFraction	combineLostFractions (lostFraction moreSignificant, lostFraction lessSignificant)
static unsigned int	HUerrBound (bool inexactMultiply, unsigned int HUerr1, unsigned int HUerr2)
static integerPart	ulpsFromBoundary (const integerPart *parts, unsigned int bits, bool isNearest)
static unsigned int	powerOf5 (integerPart *dst, unsigned int power)
static unsigned int	partAsHex (char *dst, integerPart part, unsigned int count, const char *hexDigitChars)
static char *	writeUnsignedDecimal (char *dst, unsigned int n)
static char *	writeSignedDecimal (char *dst, int value)
static void	anonymous_namespace{APFloat.cpp}::append (SmallVectorImpl< char > &Buffer, unsigned N, const char *Str)
template<unsigned N>
void	anonymous_namespace{APFloat.cpp}::append (SmallVectorImpl< char > &Buffer, const char(&Str)[N])
void	anonymous_namespace{APFloat.cpp}::AdjustToPrecision (APInt &significand, int &exp, unsigned FormatPrecision)
	Removes data from the given significand until it is no more precise than is required for the desired precision.
void	anonymous_namespace{APFloat.cpp}::AdjustToPrecision (SmallVectorImpl< char > &buffer, int &exp, unsigned FormatPrecision)
Variables
const unsigned int	llvm::maxExponent = 16383
const unsigned int	llvm::maxPrecision = 113
const unsigned int	llvm::maxPowerOfFiveExponent = maxExponent + maxPrecision - 1
const unsigned int	llvm::maxPowerOfFiveParts
static const char	hexDigitsLower [] = "0123456789abcdef0"
static const char	hexDigitsUpper [] = "0123456789ABCDEF0"
static const char	infinityL [] = "infinity"
static const char	infinityU [] = "INFINITY"
static const char	NaNL [] = "nan"
static const char	NaNU [] = "NAN"

---

Define Documentation

#define COMPILE_TIME_ASSERT

(

cond

)

extern int CTAssert[(cond) ? 1 : -1]

#define convolve	(	lhs,
		rhs		)	((lhs) * 4 + (rhs))

---

Function Documentation

static void assertArithmeticOK

(

const llvm::fltSemantics &

semantics

)

[inline, static]

static lostFraction combineLostFractions	(	lostFraction	moreSignificant,
		lostFraction	lessSignificant
	)			[static]

COMPILE_TIME_ASSERT

(

integerPartWidth%

4 = =0

)

static unsigned int decDigitValue

(

unsigned int

c

)

[inline, static]

static unsigned int hexDigitValue

(

unsigned int

c

)

[static]

static unsigned int HUerrBound	(	bool	inexactMultiply,
		unsigned int	HUerr1,
		unsigned int	HUerr2
	)			[static]

static void interpretDecimal	(	StringRef::iterator	begin,
		StringRef::iterator	end,
		decimalInfo *	D
	)			[static]

static lostFraction lostFractionThroughTruncation	(	const integerPart *	parts,
		unsigned int	partCount,
		unsigned int	bits
	)			[static]

static unsigned int partAsHex	(	char *	dst,
		integerPart	part,
		unsigned int	count,
		const char *	hexDigitChars
	)			[static]

static unsigned int partCountForBits

(

unsigned int

bits

)

[inline, static]

static unsigned int powerOf5	(	integerPart *	dst,
		unsigned int	power
	)			[static]

static int readExponent	(	StringRef::iterator	begin,
		StringRef::iterator	end
	)			[static]

static lostFraction shiftRight	(	integerPart *	dst,
		unsigned int	parts,
		unsigned int	bits
	)			[static]

static StringRef::iterator skipLeadingZeroesAndAnyDot	(	StringRef::iterator	begin,
		StringRef::iterator	end,
		StringRef::iterator *	dot
	)			[static]

static int totalExponent	(	StringRef::iterator	p,
		StringRef::iterator	end,
		int	exponentAdjustment
	)			[static]

static lostFraction trailingHexadecimalFraction	(	StringRef::iterator	p,
		StringRef::iterator	end,
		unsigned int	digitValue
	)			[static]

static integerPart ulpsFromBoundary	(	const integerPart *	parts,
		unsigned int	bits,
		bool	isNearest
	)			[static]

static char* writeSignedDecimal	(	char *	dst,
		int	value
	)			[static]

static char* writeUnsignedDecimal	(	char *	dst,
		unsigned int	n
	)			[static]

---

Variable Documentation

const char hexDigitsLower[] = "0123456789abcdef0" [static]

const char hexDigitsUpper[] = "0123456789ABCDEF0" [static]

const char infinityL[] = "infinity" [static]

const char infinityU[] = "INFINITY" [static]

const char NaNL[] = "nan" [static]

const char NaNU[] = "NAN" [static]