APFloat.h File Reference

This file declares a class to represent arbitrary precision floating point values and provide a variety of arithmetic operations on them. More...

#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/FloatingPointMode.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/float128.h"
#include <memory>

Go to the source code of this file.

Classes
struct	llvm::APFloatBase
	A self-contained host- and target-independent arbitrary-precision floating-point software implementation. More...
class	llvm::detail::IEEEFloat
class	llvm::detail::DoubleAPFloat
class	llvm::APFloat

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)

Typedefs
using	llvm::detail::integerPart = APFloatBase::integerPart
using	llvm::detail::uninitializedTag = APFloatBase::uninitializedTag
using	llvm::detail::roundingMode = APFloatBase::roundingMode
using	llvm::detail::opStatus = APFloatBase::opStatus
using	llvm::detail::cmpResult = APFloatBase::cmpResult
using	llvm::detail::fltCategory = APFloatBase::fltCategory
using	llvm::detail::ExponentType = APFloatBase::ExponentType

Enumerations
enum	llvm::lostFraction { llvm::lfExactlyZero , llvm::lfLessThanHalf , llvm::lfExactlyHalf , llvm::lfMoreThanHalf }
	Enum that represents what fraction of the LSB truncated bits of an fp number represent. More...

Functions
LLVM_ABI hash_code	llvm::detail::hash_value (const IEEEFloat &Arg)
LLVM_ABI int	llvm::detail::ilogb (const IEEEFloat &Arg)
LLVM_ABI IEEEFloat	llvm::detail::scalbn (IEEEFloat X, int Exp, roundingMode RoundingMode)
LLVM_ABI IEEEFloat	llvm::detail::frexp (const IEEEFloat &Val, int &Exp, roundingMode RM)
LLVM_ABI hash_code	llvm::detail::hash_value (const DoubleAPFloat &Arg)
LLVM_ABI DoubleAPFloat	llvm::detail::scalbn (const DoubleAPFloat &Arg, int Exp, roundingMode RM)
LLVM_ABI DoubleAPFloat	llvm::detail::frexp (const DoubleAPFloat &X, int &Exp, roundingMode)
LLVM_ABI hash_code	llvm::hash_value (const APFloat &Arg)
	See friend declarations above.
int	llvm::ilogb (const APFloat &Arg)
	Returns the exponent of the internal representation of the APFloat.
APFloat	llvm::scalbn (APFloat X, int Exp, APFloat::roundingMode RM)
	Returns: X * 2^Exp for integral exponents.
APFloat	llvm::frexp (const APFloat &X, int &Exp, APFloat::roundingMode RM)
	Equivalent of C standard library function.
APFloat	llvm::abs (APFloat X)
	Returns the absolute value of the argument.
APFloat	llvm::neg (APFloat X)
	Returns the negated value of the argument.
LLVM_READONLY APFloat	llvm::minnum (const APFloat &A, const APFloat &B)
	Implements IEEE-754 2008 minNum semantics.
LLVM_READONLY APFloat	llvm::maxnum (const APFloat &A, const APFloat &B)
	Implements IEEE-754 2008 maxNum semantics.
LLVM_READONLY APFloat	llvm::minimum (const APFloat &A, const APFloat &B)
	Implements IEEE 754-2019 minimum semantics.
LLVM_READONLY APFloat	llvm::minimumnum (const APFloat &A, const APFloat &B)
	Implements IEEE 754-2019 minimumNumber semantics.
LLVM_READONLY APFloat	llvm::maximum (const APFloat &A, const APFloat &B)
	Implements IEEE 754-2019 maximum semantics.
LLVM_READONLY APFloat	llvm::maximumnum (const APFloat &A, const APFloat &B)
	Implements IEEE 754-2019 maximumNumber semantics.
raw_ostream &	llvm::operator<< (raw_ostream &OS, const APFloat &V)

Variables
static constexpr uninitializedTag	llvm::detail::uninitialized = APFloatBase::uninitialized
static constexpr roundingMode	llvm::detail::rmNearestTiesToEven
static constexpr roundingMode	llvm::detail::rmNearestTiesToAway
static constexpr roundingMode	llvm::detail::rmTowardNegative = APFloatBase::rmTowardNegative
static constexpr roundingMode	llvm::detail::rmTowardPositive = APFloatBase::rmTowardPositive
static constexpr roundingMode	llvm::detail::rmTowardZero = APFloatBase::rmTowardZero
static constexpr unsigned	llvm::detail::integerPartWidth = APFloatBase::integerPartWidth
static constexpr cmpResult	llvm::detail::cmpEqual = APFloatBase::cmpEqual
static constexpr cmpResult	llvm::detail::cmpLessThan = APFloatBase::cmpLessThan
static constexpr cmpResult	llvm::detail::cmpGreaterThan = APFloatBase::cmpGreaterThan
static constexpr cmpResult	llvm::detail::cmpUnordered = APFloatBase::cmpUnordered
static constexpr opStatus	llvm::detail::opOK = APFloatBase::opOK
static constexpr opStatus	llvm::detail::opInvalidOp = APFloatBase::opInvalidOp
static constexpr opStatus	llvm::detail::opDivByZero = APFloatBase::opDivByZero
static constexpr opStatus	llvm::detail::opOverflow = APFloatBase::opOverflow
static constexpr opStatus	llvm::detail::opUnderflow = APFloatBase::opUnderflow
static constexpr opStatus	llvm::detail::opInexact = APFloatBase::opInexact
static constexpr fltCategory	llvm::detail::fcInfinity = APFloatBase::fcInfinity
static constexpr fltCategory	llvm::detail::fcNaN = APFloatBase::fcNaN
static constexpr fltCategory	llvm::detail::fcNormal = APFloatBase::fcNormal
static constexpr fltCategory	llvm::detail::fcZero = APFloatBase::fcZero

Detailed Description

This file declares a class to represent arbitrary precision floating point values and provide a variety of arithmetic operations on them.

Definition in file APFloat.h.

Macro Definition Documentation

APFLOAT_DISPATCH_ON_SEMANTICS

#define APFLOAT_DISPATCH_ON_SEMANTICS

(

METHOD_CALL

)

Value:

  do {                                                                         \
    if (usesLayout<IEEEFloat>(getSemantics()))                                 \
      return U.IEEE.METHOD_CALL;                                               \
    if (usesLayout<DoubleAPFloat>(getSemantics()))                             \
      return U.Double.METHOD_CALL;                                             \
    llvm_unreachable("Unexpected semantics");                                  \
  } while (false)

Definition at line 26 of file APFloat.h.

Referenced by llvm::APFloat::bitcastToAPInt(), llvm::APFloat::changeSign(), llvm::APFloat::convertFromAPInt(), llvm::APFloat::convertFromString(), llvm::APFloat::convertToHexString(), llvm::APFloat::convertToInteger(), llvm::APFloat::getExactLog2Abs(), llvm::APFloat::isDenormal(), llvm::APFloat::isInteger(), llvm::APFloat::isLargest(), llvm::APFloat::isSmallest(), llvm::APFloat::isSmallestNormalized(), llvm::APFloat::needsCleanup(), llvm::APFloat::next(), llvm::APFloat::roundToIntegral(), and llvm::APFloat::toString().