APFloat.cpp File Reference (original) (raw)

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Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

namespace	llvm::detail
	These are wrappers over isa* function that allow them to be used in generic algorithms such as llvm:all_of, llvm::none_of, etc.

Macros
#define	APFLOAT_DISPATCH_ON_SEMANTICS(METHOD_CALL)

#define	PackCategoriesIntoKey(_lhs, _rhs) ((_lhs) * 4 + (_rhs))
	A macro used to combine two fcCategory enums into one key which can be used in a switch statement to classify how the interaction of two APFloat's categories affects an operation.

Functions
static constexpr APFloatBase::ExponentType	llvm::exponentZero (const fltSemantics &semantics)

static constexpr APFloatBase::ExponentType	llvm::exponentInf (const fltSemantics &semantics)

static constexpr APFloatBase::ExponentType	llvm::exponentNaN (const fltSemantics &semantics)

static Error	llvm::createError (const Twine &Err)

static constexpr unsigned int	llvm::partCountForBits (unsigned int bits)

static unsigned int	llvm::decDigitValue (unsigned int c)

static Expected< int >	llvm::readExponent (StringRef::iterator begin, StringRef::iterator end)

static Expected< int >	llvm::totalExponent (StringRef::iterator p, StringRef::iterator end, int exponentAdjustment)

static Expected< StringRef::iterator >	llvm::skipLeadingZeroesAndAnyDot (StringRef::iterator begin, StringRef::iterator end, StringRef::iterator *dot)

static Error	llvm::interpretDecimal (StringRef::iterator begin, StringRef::iterator end, decimalInfo *D)

static Expected< lostFraction >	llvm::trailingHexadecimalFraction (StringRef::iterator p, StringRef::iterator end, unsigned int digitValue)

static lostFraction	llvm::lostFractionThroughTruncation (const APFloatBase::integerPart *parts, unsigned int partCount, unsigned int bits)

static lostFraction	llvm::shiftRight (APFloatBase::integerPart *dst, unsigned int parts, unsigned int bits)

static lostFraction	llvm::combineLostFractions (lostFraction moreSignificant, lostFraction lessSignificant)

static unsigned int	llvm::HUerrBound (bool inexactMultiply, unsigned int HUerr1, unsigned int HUerr2)

static APFloatBase::integerPart	llvm::ulpsFromBoundary (const APFloatBase::integerPart *parts, unsigned int bits, bool isNearest)

static unsigned int	llvm::powerOf5 (APFloatBase::integerPart *dst, unsigned int power)

static unsigned int	llvm::partAsHex (char dst, APFloatBase::integerPart part, unsigned int count, const char hexDigitChars)

static char *	llvm::writeUnsignedDecimal (char *dst, unsigned int n)

static char *	llvm::writeSignedDecimal (char *dst, int value)

static void	llvm::detail::tcSetLeastSignificantBits (APInt::WordType *dst, unsigned parts, unsigned bits)

hash_code	llvm::detail::hash_value (const IEEEFloat &Arg)

int	llvm::detail::ilogb (const IEEEFloat &Arg)

IEEEFloat	llvm::detail::scalbn (IEEEFloat X, int Exp, roundingMode)

IEEEFloat	llvm::detail::frexp (const IEEEFloat &Val, int &Exp, roundingMode RM)

hash_code	llvm::detail::hash_value (const DoubleAPFloat &Arg)

DoubleAPFloat	llvm::detail::scalbn (const DoubleAPFloat &Arg, int Exp, APFloat::roundingMode RM)

DoubleAPFloat	llvm::detail::frexp (const DoubleAPFloat &Arg, int &Exp, APFloat::roundingMode RM)

hash_code	llvm::hash_value (const APFloat &Arg)
	See friend declarations above.

Variables
static constexpr fltSemantics	llvm::semIEEEhalf = {15, -14, 11, 16}

static constexpr fltSemantics	llvm::semBFloat = {127, -126, 8, 16}

static constexpr fltSemantics	llvm::semIEEEsingle = {127, -126, 24, 32}

static constexpr fltSemantics	llvm::semIEEEdouble = {1023, -1022, 53, 64}

static constexpr fltSemantics	llvm::semIEEEquad = {16383, -16382, 113, 128}

static constexpr fltSemantics	llvm::semFloat8E5M2 = {15, -14, 3, 8}

static constexpr fltSemantics	llvm::semFloat8E5M2FNUZ

static constexpr fltSemantics	llvm::semFloat8E4M3 = {7, -6, 4, 8}

static constexpr fltSemantics	llvm::semFloat8E4M3FN

static constexpr fltSemantics	llvm::semFloat8E4M3FNUZ

static constexpr fltSemantics	llvm::semFloat8E4M3B11FNUZ

static constexpr fltSemantics	llvm::semFloat8E3M4 = {3, -2, 5, 8}

static constexpr fltSemantics	llvm::semFloatTF32 = {127, -126, 11, 19}

static constexpr fltSemantics	llvm::semFloat8E8M0FNU

static constexpr fltSemantics	llvm::semFloat6E3M2FN

static constexpr fltSemantics	llvm::semFloat6E2M3FN

static constexpr fltSemantics	llvm::semFloat4E2M1FN

static constexpr fltSemantics	llvm::semX87DoubleExtended = {16383, -16382, 64, 80}

static constexpr fltSemantics	llvm::semBogus = {0, 0, 0, 0}

static constexpr fltSemantics	llvm::semPPCDoubleDouble = {-1, 0, 0, 128}

static constexpr fltSemantics	llvm::semPPCDoubleDoubleLegacy

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	llvm::hexDigitsLower [] = "0123456789abcdef0"

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

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

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

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

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

◆ APFLOAT_DISPATCH_ON_SEMANTICS

| #define APFLOAT_DISPATCH_ON_SEMANTICS | ( | | METHOD_CALL | ) | | ---------------------------------------- | - | | ------------ | - |

Value:

do { \

if (usesLayout(getSemantics())) \

return U.IEEE.METHOD_CALL; \

if (usesLayout(getSemantics())) \

return U.Double.METHOD_CALL; \

llvm_unreachable("Unexpected semantics"); \

} while (false)

Definition at line 31 of file APFloat.cpp.

◆ PackCategoriesIntoKey

| #define PackCategoriesIntoKey | ( | | _lhs, | | ----------------------------- | ------------------------ | | ------ | | | _rhs | | | | | ) | ((_lhs) * 4 + (_rhs)) | | |

A macro used to combine two fcCategory enums into one key which can be used in a switch statement to classify how the interaction of two APFloat's categories affects an operation.

TODO: If clang source code is ever allowed to use constexpr in its own codebase, change this into a static inline function.

Definition at line 48 of file APFloat.cpp.