APFloat.cpp File Reference

#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/Support/MathExtras.h"
#include <cstring>

Include dependency graph for APFloat.cpp:

Go to the source code of this file.

Namespaces
namespace	llvm
Classes
struct	llvm::fltSemantics
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 (const char *p)
static int	totalExponent (const char *p, int exponentAdjustment)
static const char *	skipLeadingZeroesAndAnyDot (const char *p, const char **dot)
static void	interpretDecimal (const char *p, decimalInfo *D)
static lostFraction	trailingHexadecimalFraction (const char *p, 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)
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]

Definition at line 26 of file APFloat.cpp.

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

Definition at line 22 of file APFloat.cpp.

Referenced by llvm::APFloat::compare().

---

Function Documentation

static void @473::assertArithmeticOK

(

const llvm::fltSemantics &

semantics

)

[inline, static]

Definition at line 115 of file APFloat.cpp.

References llvm::fltSemantics::arithmeticOK.

Referenced by llvm::APFloat::APFloat(), llvm::APFloat::compare(), llvm::APFloat::convert(), llvm::APFloat::convertFromSignExtendedInteger(), llvm::APFloat::convertFromString(), llvm::APFloat::convertToHexString(), llvm::APFloat::divide(), llvm::APFloat::fusedMultiplyAdd(), llvm::APFloat::mod(), and llvm::APFloat::multiply().

static lostFraction @473::combineLostFractions	(	lostFraction	moreSignificant,
		lostFraction	lessSignificant
	)			[static]

Definition at line 359 of file APFloat.cpp.

References llvm::lfExactlyHalf, llvm::lfExactlyZero, llvm::lfLessThanHalf, and llvm::lfMoreThanHalf.

COMPILE_TIME_ASSERT

(

integerPartWidth%

4 = =0

)

static unsigned int @473::decDigitValue

(

unsigned int

c

)

[inline, static]

Definition at line 89 of file APFloat.cpp.

Referenced by interpretDecimal(), readExponent(), and totalExponent().

static unsigned int @473::hexDigitValue

(

unsigned int

c

)

[static]

Definition at line 95 of file APFloat.cpp.

Referenced by trailingHexadecimalFraction().

static unsigned int @473::HUerrBound	(	bool	inexactMultiply,
		unsigned int	HUerr1,
		unsigned int	HUerr2
	)			[static]

Definition at line 380 of file APFloat.cpp.

static void @473::interpretDecimal	(	const char *	p,
		decimalInfo *	D
	)			[static]

Definition at line 246 of file APFloat.cpp.

References decDigitValue(), readExponent(), and skipLeadingZeroesAndAnyDot().

static lostFraction @473::lostFractionThroughTruncation	(	const integerPart *	parts,
		unsigned int	partCount,
		unsigned int	bits
	)			[static]

Definition at line 324 of file APFloat.cpp.

References llvm::integerPartWidth, llvm::lfExactlyHalf, llvm::lfExactlyZero, llvm::lfLessThanHalf, and llvm::lfMoreThanHalf.

Referenced by llvm::APFloat::convert(), and shiftRight().

static unsigned int @473::partAsHex	(	char *	dst,
		integerPart	part,
		unsigned int	count,
		const char *	hexDigitChars
	)			[static]

Definition at line 510 of file APFloat.cpp.

References llvm::integerPartWidth.

static unsigned int @473::partCountForBits

(

unsigned int

bits

)

[inline, static]

Definition at line 82 of file APFloat.cpp.

References llvm::integerPartWidth.

Referenced by llvm::APFloat::convert(), llvm::APFloat::convertFromZeroExtendedInteger(), and llvm::APFloat::convertToInteger().

static unsigned int @473::powerOf5	(	integerPart *	dst,
		unsigned int	power
	)			[static]

Definition at line 439 of file APFloat.cpp.

References llvm::maxExponent, and llvm::maxPowerOfFiveParts.

static int @473::readExponent

(

const char *

p

)

[static]

Definition at line 126 of file APFloat.cpp.

References decDigitValue().

Referenced by interpretDecimal().

static lostFraction @473::shiftRight	(	integerPart *	dst,
		unsigned int	parts,
		unsigned int	bits
	)			[static]

Definition at line 346 of file APFloat.cpp.

References lostFractionThroughTruncation().

static const char* @473::skipLeadingZeroesAndAnyDot	(	const char *	p,
		const char **	dot
	)			[static]

Definition at line 210 of file APFloat.cpp.

Referenced by interpretDecimal().

static int @473::totalExponent	(	const char *	p,
		int	exponentAdjustment
	)			[static]

Definition at line 164 of file APFloat.cpp.

References decDigitValue(), and exponent.

static lostFraction @473::trailingHexadecimalFraction	(	const char *	p,
		unsigned int	digitValue
	)			[static]

Definition at line 296 of file APFloat.cpp.

References hexDigitValue(), llvm::lfExactlyHalf, llvm::lfExactlyZero, llvm::lfLessThanHalf, and llvm::lfMoreThanHalf.

static integerPart @473::ulpsFromBoundary	(	const integerPart *	parts,
		unsigned int	bits,
		bool	isNearest
	)			[static]

Definition at line 394 of file APFloat.cpp.

References llvm::integerPartWidth.

static char* @473::writeSignedDecimal	(	char *	dst,
		int	value
	)			[static]

Definition at line 546 of file APFloat.cpp.

References writeUnsignedDecimal().

static char* @473::writeUnsignedDecimal	(	char *	dst,
		unsigned int	n
	)			[static]

Definition at line 528 of file APFloat.cpp.

Referenced by writeSignedDecimal().

---

Variable Documentation

int exponent

Definition at line 241 of file APFloat.cpp.

Referenced by totalExponent().

const char* firstSigDigit

Definition at line 239 of file APFloat.cpp.

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

Definition at line 499 of file APFloat.cpp.

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

Definition at line 500 of file APFloat.cpp.

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

Definition at line 501 of file APFloat.cpp.

Referenced by llvm::APFloat::convertToHexString().

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

Definition at line 502 of file APFloat.cpp.

Referenced by llvm::APFloat::convertToHexString().

const char* lastSigDigit

Definition at line 240 of file APFloat.cpp.

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

Definition at line 503 of file APFloat.cpp.

Referenced by llvm::APFloat::convertToHexString().

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

Definition at line 504 of file APFloat.cpp.

Referenced by llvm::APFloat::convertToHexString().

int normalizedExponent

Definition at line 242 of file APFloat.cpp.