LLVM: llvm::APFloatBase Class Reference (original) (raw)

#include "[llvm/ADT/APFloat.h](APFloat%5F8h%5Fsource.html)"

Public Types
enum cmpResult { cmpLessThan, cmpEqual, cmpGreaterThan, cmpUnordered }
IEEE-754R 5.11: Floating Point Comparison Relations. More...
enum opStatus { opOK = 0x00 , opInvalidOp = 0x01 , opDivByZero = 0x02 , opOverflow = 0x04 , opUnderflow = 0x08 , opInexact = 0x10 }
IEEE-754R 7: Default exception handling. More...
enum fltCategory { fcInfinity, fcNaN, fcNormal, fcZero }
Category of internally-represented number. More...
enum uninitializedTag { uninitialized }
Convenience enum used to construct an uninitialized APFloat. More...
enum IlogbErrorKinds { IEK_Zero = INT_MIN + 1 , IEK_NaN = INT_MIN , IEK_Inf = INT_MAX }
Enumeration of ilogb error results. More...
typedef APInt::WordType integerPart
using ExponentType = int32_t
A signed type to represent a floating point numbers unbiased exponent.
using roundingMode = llvm::RoundingMode
IEEE-754R 4.3: Rounding-direction attributes.
Static Public Member Functions
static LLVM_ABI unsigned int semanticsPrecision (const fltSemantics &)
static LLVM_ABI ExponentType semanticsMinExponent (const fltSemantics &)
static LLVM_ABI ExponentType semanticsMaxExponent (const fltSemantics &)
static LLVM_ABI unsigned int semanticsSizeInBits (const fltSemantics &)
static LLVM_ABI unsigned int semanticsIntSizeInBits (const fltSemantics &, bool)
static LLVM_ABI bool semanticsHasZero (const fltSemantics &)
static LLVM_ABI bool semanticsHasSignedRepr (const fltSemantics &)
static LLVM_ABI bool semanticsHasInf (const fltSemantics &)
static LLVM_ABI bool semanticsHasNaN (const fltSemantics &)
static LLVM_ABI bool isIEEELikeFP (const fltSemantics &)
static LLVM_ABI bool hasSignBitInMSB (const fltSemantics &)
static LLVM_ABI bool isRepresentableAsNormalIn (const fltSemantics &Src, const fltSemantics &Dst)
static LLVM_ABI unsigned getSizeInBits (const fltSemantics &Sem)
Returns the size of the floating point number (in bits) in the given semantics.
Static Public Attributes
static constexpr unsigned integerPartWidth = APInt::APINT_BITS_PER_WORD
static constexpr roundingMode rmNearestTiesToEven
static constexpr roundingMode rmTowardPositive = RoundingMode::TowardPositive
static constexpr roundingMode rmTowardNegative = RoundingMode::TowardNegative
static constexpr roundingMode rmTowardZero = RoundingMode::TowardZero
static constexpr roundingMode rmNearestTiesToAway
Floating Point Semantics.
enum Semantics { S_IEEEhalf, S_BFloat, S_IEEEsingle, S_IEEEdouble, S_IEEEquad, S_PPCDoubleDouble, S_PPCDoubleDoubleLegacy, S_Float8E5M2, S_Float8E5M2FNUZ, S_Float8E4M3, S_Float8E4M3FN, S_Float8E4M3FNUZ, S_Float8E4M3B11FNUZ, S_Float8E3M4, S_FloatTF32, S_Float8E8M0FNU, S_Float6E3M2FN, S_Float6E2M3FN, S_Float4E2M1FN, S_x87DoubleExtended, S_MaxSemantics = S_x87DoubleExtended }
class detail::IEEEFloat
class detail::DoubleAPFloat
class APFloat
static LLVM_ABI const llvm::fltSemantics & EnumToSemantics (Semantics S)
static LLVM_ABI Semantics SemanticsToEnum (const llvm::fltSemantics &Sem)
static const fltSemantics & IEEEhalf ()
static const fltSemantics & BFloat ()
static const fltSemantics & IEEEsingle ()
static const fltSemantics & IEEEdouble ()
static const fltSemantics & IEEEquad ()
static const fltSemantics & PPCDoubleDouble ()
static const fltSemantics & PPCDoubleDoubleLegacy ()
static const fltSemantics & Float8E5M2 ()
static const fltSemantics & Float8E5M2FNUZ ()
static const fltSemantics & Float8E4M3 ()
static const fltSemantics & Float8E4M3FN ()
static const fltSemantics & Float8E4M3FNUZ ()
static const fltSemantics & Float8E4M3B11FNUZ ()
static const fltSemantics & Float8E3M4 ()
static const fltSemantics & FloatTF32 ()
static const fltSemantics & Float8E8M0FNU ()
static const fltSemantics & Float6E3M2FN ()
static const fltSemantics & Float6E2M3FN ()
static const fltSemantics & Float4E2M1FN ()
static const fltSemantics & x87DoubleExtended ()
static const fltSemantics & Bogus ()
A Pseudo fltsemantic used to construct APFloats that cannot conflict with anything real.
static LLVM_ABI bool isRepresentableBy (const fltSemantics &A, const fltSemantics &B)

Definition at line 149 of file APFloat.h.

◆ ExponentType

using llvm::APFloatBase::ExponentType = int32_t

A signed type to represent a floating point numbers unbiased exponent.

Definition at line 155 of file APFloat.h.

◆ integerPart

◆ roundingMode

IEEE-754R 4.3: Rounding-direction attributes.

Definition at line 342 of file APFloat.h.

◆ cmpResult

IEEE-754R 5.11: Floating Point Comparison Relations.

Enumerator
cmpLessThan
cmpEqual
cmpGreaterThan
cmpUnordered

Definition at line 334 of file APFloat.h.

◆ fltCategory

Category of internally-represented number.

Enumerator
fcInfinity
fcNaN
fcNormal
fcZero

Definition at line 370 of file APFloat.h.

◆ IlogbErrorKinds

Enumeration of ilogb error results.

Enumerator
IEK_Zero
IEK_NaN
IEK_Inf

Definition at line 383 of file APFloat.h.

◆ opStatus

IEEE-754R 7: Default exception handling.

opUnderflow or opOverflow are always returned or-ed with opInexact.

APFloat models this behavior specified by IEEE-754: "For operations producing results in floating-point format, the default result of an operation that signals the invalid operation exception shall be a quiet NaN."

Enumerator
opOK
opInvalidOp
opDivByZero
opOverflow
opUnderflow
opInexact

Definition at line 360 of file APFloat.h.

◆ Semantics

Enumerator
S_IEEEhalf
S_BFloat
S_IEEEsingle
S_IEEEdouble
S_IEEEquad
S_PPCDoubleDouble
S_PPCDoubleDoubleLegacy
S_Float8E5M2
S_Float8E5M2FNUZ
S_Float8E4M3
S_Float8E4M3FN
S_Float8E4M3FNUZ
S_Float8E4M3B11FNUZ
S_Float8E3M4
S_FloatTF32
S_Float8E8M0FNU
S_Float6E3M2FN
S_Float6E2M3FN
S_Float4E2M1FN
S_x87DoubleExtended
S_MaxSemantics

Definition at line 159 of file APFloat.h.

◆ uninitializedTag

Convenience enum used to construct an uninitialized APFloat.

Enumerator
uninitialized

Definition at line 378 of file APFloat.h.

◆ BFloat()

Definition at line 295 of file APFloat.h.

Referenced by EnumToSemantics(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::ConstantDataSequential::getElementAsAPFloat(), llvm::MVT::getFltSemantics(), getOpFltSemantics(), llvm::ConstantFP::isValueValidForType(), llvm::NVPTXFloatMCExpr::printImpl(), llvm::APFixedPoint::promoteFloatSemantics(), SemanticsToEnum(), shrinkFPConstant(), writeAPFloatInternal(), and llvm::X86TargetLowering::X86TargetLowering().

◆ Bogus()

◆ EnumToSemantics()

Definition at line 174 of file APFloat.cpp.

References BFloat(), Float4E2M1FN(), Float6E2M3FN(), Float6E3M2FN(), Float8E3M4(), Float8E4M3(), Float8E4M3B11FNUZ(), Float8E4M3FN(), Float8E4M3FNUZ(), Float8E5M2(), Float8E5M2FNUZ(), Float8E8M0FNU(), FloatTF32(), IEEEdouble(), IEEEhalf(), IEEEquad(), IEEEsingle(), llvm_unreachable, PPCDoubleDouble(), PPCDoubleDoubleLegacy(), S_BFloat, S_Float4E2M1FN, S_Float6E2M3FN, S_Float6E3M2FN, S_Float8E3M4, S_Float8E4M3, S_Float8E4M3B11FNUZ, S_Float8E4M3FN, S_Float8E4M3FNUZ, S_Float8E5M2, S_Float8E5M2FNUZ, S_Float8E8M0FNU, S_FloatTF32, S_IEEEdouble, S_IEEEhalf, S_IEEEquad, S_IEEEsingle, S_PPCDoubleDouble, S_PPCDoubleDoubleLegacy, S_x87DoubleExtended, and x87DoubleExtended().

◆ Float4E2M1FN()

◆ Float6E2M3FN()

◆ Float6E3M2FN()

◆ Float8E3M4()

◆ Float8E4M3()

◆ Float8E4M3B11FNUZ()

◆ Float8E4M3FN()

◆ Float8E4M3FNUZ()

◆ Float8E5M2()

◆ Float8E5M2FNUZ()

◆ Float8E8M0FNU()

◆ FloatTF32()

◆ getSizeInBits()

◆ hasSignBitInMSB()

◆ IEEEdouble()

Definition at line 297 of file APFloat.h.

Referenced by llvm::APFloat::APFloat(), combineBitcast(), constantFoldFpUnary(), convertIntToDoubleImm(), emitDebugValueComment(), EnumToSemantics(), fixFuncEntryCount(), llvm::SelectionDAG::FoldConstantArithmetic(), getConstantVector(), getConstantVector(), llvm::ConstantDataSequential::getElementAsAPFloat(), llvm::getFltSemanticForLLT(), getFltSemantics(), llvm::MVT::getFltSemantics(), llvm::RISCVLoadFPImm::getLoadFPImm(), getOneFP(), getOpFltSemantics(), getZeroFP(), isInv2Pi(), isInv2Pi(), llvm::ConstantFP::isValueValidForType(), llvm::AMDGPULegalizerInfo::legalizeFroundeven(), llvm::AMDGPULegalizerInfo::legalizeRsqClampIntrinsic(), LLVMConstRealGetDouble(), llvm::LegalizerHelper::lowerFPTOUI(), llvm::AMDGPUTargetLowering::LowerFROUNDEVEN(), llvm::ARMAsmPrinter::lowerOperand(), LowerUINT_TO_FP_i64(), lowerUINT_TO_FP_vXi32(), llvm::SDNode::print_details(), llvm::NVPTXFloatMCExpr::printImpl(), llvm::WebAssemblyInstPrinter::printOperand(), llvm::APFixedPoint::promoteFloatSemantics(), SemanticsToEnum(), shrinkFPConstant(), and writeAPFloatInternal().

◆ IEEEhalf()

Definition at line 294 of file APFloat.h.

Referenced by canSafelyConvertTo16Bit(), convertNvvmIntrinsicToLlvm(), EnumToSemantics(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::getAPFloatFromSize(), getConstantVector(), getConstantVector(), llvm::ConstantDataSequential::getElementAsAPFloat(), llvm::getFltSemanticForLLT(), getFltSemantics(), llvm::MVT::getFltSemantics(), llvm::RISCVLoadFPImm::getLoadFPImm(), getOneFP(), getOpFltSemantics(), getZeroFP(), llvm::GCNTTIImpl::instCombineIntrinsic(), isFPExtFromF16OrConst(), isInv2Pi(), isInv2Pi(), llvm::ConstantFP::isValueValidForType(), matchFPExtFromF16(), llvm::NVPTXFloatMCExpr::printImpl(), llvm::APFixedPoint::promoteFloatSemantics(), SemanticsToEnum(), shrinkFPConstant(), strictFPExtFromF16(), writeAPFloatInternal(), and llvm::X86TargetLowering::X86TargetLowering().

◆ IEEEquad()

◆ IEEEsingle()

Definition at line 296 of file APFloat.h.

Referenced by llvm::APFloat::APFloat(), llvm::checkConvertToNonDenormSingle(), convertNvvmIntrinsicToLlvm(), llvm::convertToNonDenormSingle(), EnumToSemantics(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::generateReadImageInst(), getConstantVector(), getConstantVector(), llvm::ConstantDataSequential::getElementAsAPFloat(), getF32Constant(), llvm::getFltSemanticForLLT(), getFltSemantics(), llvm::MVT::getFltSemantics(), llvm::RISCVLoadFPImm::getLoadFPImm(), getOneFP(), getOpFltSemantics(), llvm::AMDGPULegalizerInfo::getScaledLogInput(), llvm::AMDGPUTargetLowering::getScaledLogInput(), getZeroFP(), llvm::Attributor::identifyDefaultAbstractAttributes(), isInv2Pi(), isInv2Pi(), llvm::ConstantFP::isValueValidForType(), llvm::AMDGPULegalizerInfo::legalizeFExp(), llvm::AMDGPULegalizerInfo::legalizeFlogCommon(), llvm::AMDGPULegalizerInfo::legalizeRsqClampIntrinsic(), llvm::AMDGPUTargetLowering::lowerFEXP(), llvm::LegalizerHelper::lowerFPTOUI(), lowerUINT_TO_FP_vXi32(), llvm::AMDGPUTargetLowering::needsDenormHandlingF32(), needsDenormHandlingF32(), llvm::SDNode::print_details(), llvm::NVPTXFloatMCExpr::printImpl(), llvm::WebAssemblyInstPrinter::printOperand(), llvm::APFixedPoint::promoteFloatSemantics(), SemanticsToEnum(), shrinkFPConstant(), llvm::pdb::Variant::toAPFloat(), llvm::NVPTXTargetLowering::useF32FTZ(), valueHasFloatPrecision(), and writeAPFloatInternal().

◆ isIEEELikeFP()

◆ isRepresentableAsNormalIn()

◆ isRepresentableBy()

◆ PPCDoubleDouble()

◆ PPCDoubleDoubleLegacy()

◆ semanticsHasInf()

◆ semanticsHasNaN()

◆ semanticsHasSignedRepr()

◆ semanticsHasZero()

◆ semanticsIntSizeInBits()

◆ semanticsMaxExponent()

◆ semanticsMinExponent()

◆ semanticsPrecision()

◆ semanticsSizeInBits()

◆ SemanticsToEnum()

Definition at line 221 of file APFloat.cpp.

References BFloat(), Float4E2M1FN(), Float6E2M3FN(), Float6E3M2FN(), Float8E3M4(), Float8E4M3(), Float8E4M3B11FNUZ(), Float8E4M3FN(), Float8E4M3FNUZ(), Float8E5M2(), Float8E5M2FNUZ(), Float8E8M0FNU(), FloatTF32(), IEEEdouble(), IEEEhalf(), IEEEquad(), IEEEsingle(), llvm_unreachable, PPCDoubleDouble(), PPCDoubleDoubleLegacy(), S_BFloat, S_Float4E2M1FN, S_Float6E2M3FN, S_Float6E3M2FN, S_Float8E3M4, S_Float8E4M3, S_Float8E4M3B11FNUZ, S_Float8E4M3FN, S_Float8E4M3FNUZ, S_Float8E5M2, S_Float8E5M2FNUZ, S_Float8E8M0FNU, S_FloatTF32, S_IEEEdouble, S_IEEEhalf, S_IEEEquad, S_IEEEsingle, S_PPCDoubleDouble, S_PPCDoubleDoubleLegacy, S_x87DoubleExtended, and x87DoubleExtended().

Referenced by isIEEELikeFP(), and llvm::SIInstrInfo::isInlineConstant().

◆ x87DoubleExtended()

◆ APFloat

◆ detail::DoubleAPFloat

◆ detail::IEEEFloat

◆ integerPartWidth

◆ rmNearestTiesToAway

◆ rmNearestTiesToEven

Initial value:

=

@ NearestTiesToEven

roundTiesToEven.

Definition at line 344 of file APFloat.h.

Referenced by llvm::APFloat::APFloat(), canLosslesslyConvertToFPType(), llvm::checkConvertToNonDenormSingle(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantFoldCastInstruction(), llvm::ConstantFoldFPBinOp(), constantFoldFpUnary(), llvm::ConstantFoldIntToFloat(), llvm::APFloat::convertToDouble(), llvm::APFixedPoint::convertToFloat(), llvm::APFloat::convertToFloat(), llvm::convertToNonDenormSingle(), emitDebugValueComment(), llvm::TargetLowering::expandFP_TO_UINT(), fitsInFPType(), fixFuncEntryCount(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::SelectionDAG::foldConstantFPMath(), foldFCmpFpTrunc(), llvm::InstCombinerImpl::foldFCmpIntToFPConst(), foldFrexpOfSelect(), llvm::ConstantFP::get(), llvm::getAPFloatFromSize(), llvm::StringRef::getAsDouble(), llvm::SelectionDAG::getConstantFP(), llvm::ExecutionEngine::getConstantValue(), llvm::nvvm::GetFAddRoundingMode(), llvm::nvvm::GetFDivRoundingMode(), llvm::nvvm::GetFMARoundingMode(), llvm::nvvm::GetFMulRoundingMode(), llvm::nvvm::GetFPToIntegerRoundingMode(), llvm::RISCVLoadFPImm::getLoadFPImm(), llvm::SelectionDAG::getNode(), llvm::nvvm::GetRCPRoundingMode(), llvm::harrisonUlp(), llvm::detail::IEEEFloat::ilogb, llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::APFloat::isExactlyValue(), llvm::ConstantFP::isExactlyValue(), isFPExtFromF16OrConst(), llvm::ConstantFP::isValueValidForType(), llvm::ConstantFPSDNode::isValueValidForType(), LLVMConstRealGetDouble(), llvm::LegalizerHelper::lowerFPTOUI(), LowerFROUND(), lowerFTRUNC_FCEIL_FFLOOR_FROUND(), lowerVectorFTRUNC_FCEIL_FFLOOR_FROUND(), lowerVectorStrictFTRUNC_FCEIL_FFLOOR_FROUND(), llvm::CombinerHelper::matchConstantFoldFMA(), matchFPExtFromF16(), llvm::APFloat::operator*(), llvm::APFloat::operator+(), llvm::APFloat::operator-(), llvm::APFloat::operator/(), llvm::AMDGPUTargetLowering::PerformDAGCombine(), llvm::NVPTXFloatMCExpr::printImpl(), strictFPExtFromF16(), toString(), valueHasFloatPrecision(), llvm::InstCombinerImpl::visitFCmpInst(), writeAPFloatInternal(), and llvm::X86TargetLowering::X86TargetLowering().

◆ rmTowardNegative

◆ rmTowardPositive

◆ rmTowardZero

Definition at line 348 of file APFloat.h.

Referenced by canSafelyConvertTo16Bit(), checkCVTFixedPointOperandWithFBits(), llvm::ConstantFoldCastInstruction(), llvm::APFixedPoint::convertToFloat(), ConvertToSInt(), llvm::TargetLowering::expandFP_TO_INT_SAT(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::InstCombinerImpl::foldFCmpIntToFPConst(), llvm::BuildVectorSDNode::getConstantFPSplatPow2ToLog2Int(), llvm::ExecutionEngine::getConstantValue(), llvm::APFloat::getExactInverse(), llvm::nvvm::GetFAddRoundingMode(), llvm::nvvm::GetFDivRoundingMode(), llvm::nvvm::GetFMARoundingMode(), llvm::nvvm::GetFMulRoundingMode(), llvm::nvvm::GetFPToIntegerRoundingMode(), llvm::APFixedPoint::getFromFloatValue(), llvm::nvvm::GetRCPRoundingMode(), llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::PPCTargetLowering::isFPImmLegal(), llvm::LegalizerHelper::lowerFPTOINT_SAT(), llvm::ARMAsmPrinter::lowerOperand(), and PerformVMulVCTPCombine().

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