GB2403310B - Method and apparatus for the emulation of high precision floating point instructions - Google Patents

Method and apparatus for the emulation of high precision floating point instructions

Info

Publication number
GB2403310B
GB2403310B GB0322325A GB0322325A GB2403310B GB 2403310 B GB2403310 B GB 2403310B GB 0322325 A GB0322325 A GB 0322325A GB 0322325 A GB0322325 A GB 0322325A GB 2403310 B GB2403310 B GB 2403310B
Authority
GB
United Kingdom
Prior art keywords
floating point
high precision
emulation
precision floating
target machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB0322325A
Other versions
GB2403310A (en
GB0322325D0 (en
Inventor
Paul Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Transitive Ltd
Original Assignee
Transitive Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transitive Ltd filed Critical Transitive Ltd
Publication of GB0322325D0 publication Critical patent/GB0322325D0/en
Priority to US10/726,858 priority Critical patent/US7299170B2/en
Priority to TW093117994A priority patent/TW200506720A/en
Priority to PCT/GB2004/002700 priority patent/WO2005003959A2/en
Publication of GB2403310A publication Critical patent/GB2403310A/en
Application granted granted Critical
Publication of GB2403310B publication Critical patent/GB2403310B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/3001—Arithmetic instructions
    • G06F9/30014—Arithmetic instructions with variable precision
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45504—Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/544—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
    • G06F7/5443—Sum of products

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Nonlinear Science (AREA)
  • Debugging And Monitoring (AREA)
  • Complex Calculations (AREA)

Abstract

A high precision floating point emulator and associated method for emulating subject program code on a target machine where the subject machine base operands possess a different precision than the target machine. The high precision floating point emulator is provided for the emulation of subject program code instructions having a higher precision than that supported by the target machine architecture by utilizing intermediate calculations having values with a higher precision than that supported by the target machine.
GB0322325A 2003-06-28 2003-09-24 Method and apparatus for the emulation of high precision floating point instructions Expired - Lifetime GB2403310B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/726,858 US7299170B2 (en) 2003-06-28 2003-12-02 Method and apparatus for the emulation of high precision floating point instructions
TW093117994A TW200506720A (en) 2003-06-28 2004-06-21 Method and apparatus for the emulation of high precision floating point instructions
PCT/GB2004/002700 WO2005003959A2 (en) 2003-06-28 2004-06-22 Method and apparatus for the emulation of high precision floating point instructions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0315350.9A GB0315350D0 (en) 2003-06-28 2003-06-28 Method and apparatus for the emulation of high precision floating point instructions

Publications (3)

Publication Number Publication Date
GB0322325D0 GB0322325D0 (en) 2003-10-22
GB2403310A GB2403310A (en) 2004-12-29
GB2403310B true GB2403310B (en) 2007-03-28

Family

ID=27676415

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0315350.9A Ceased GB0315350D0 (en) 2003-06-28 2003-06-28 Method and apparatus for the emulation of high precision floating point instructions
GB0322325A Expired - Lifetime GB2403310B (en) 2003-06-28 2003-09-24 Method and apparatus for the emulation of high precision floating point instructions

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0315350.9A Ceased GB0315350D0 (en) 2003-06-28 2003-06-28 Method and apparatus for the emulation of high precision floating point instructions

Country Status (3)

Country Link
GB (2) GB0315350D0 (en)
HK (1) HK1068425A1 (en)
TW (1) TW200506720A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2009007876A (en) * 2007-01-24 2009-07-31 Ibm Field device having an assembly clip for fastening to a fastening area.
GB2447968B (en) * 2007-03-30 2010-07-07 Transitive Ltd Improvements in and relating to floating point operations
US8386755B2 (en) * 2009-07-28 2013-02-26 Via Technologies, Inc. Non-atomic scheduling of micro-operations to perform round instruction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294565A (en) * 1994-10-27 1996-05-01 Hewlett Packard Co Floating point arithmetic unit
US5732005A (en) * 1995-02-10 1998-03-24 International Business Machines Corporation Single-precision, floating-point register array for floating-point units performing double-precision operations by emulation
US6138135A (en) * 1998-08-27 2000-10-24 Institute For The Development Of Emerging Architectures, L.L.C. Propagating NaNs during high precision calculations using lesser precision hardware

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294565A (en) * 1994-10-27 1996-05-01 Hewlett Packard Co Floating point arithmetic unit
US5732005A (en) * 1995-02-10 1998-03-24 International Business Machines Corporation Single-precision, floating-point register array for floating-point units performing double-precision operations by emulation
US6138135A (en) * 1998-08-27 2000-10-24 Institute For The Development Of Emerging Architectures, L.L.C. Propagating NaNs during high precision calculations using lesser precision hardware

Also Published As

Publication number Publication date
GB2403310A (en) 2004-12-29
GB0322325D0 (en) 2003-10-22
TW200506720A (en) 2005-02-16
GB0315350D0 (en) 2003-08-06
HK1068425A1 (en) 2005-04-29

Similar Documents

Publication Publication Date Title
HK1083657A1 (en) Method and apparatus for shuffling data
WO2005003959A3 (en) Method and apparatus for the emulation of high precision floating point instructions
DE60042824D1 (en) THE SEQUENCE IN A ADVANCED MICROPROCESSOR
WO2002035343A3 (en) Software instrumentation method and apparatus
ATE266226T1 (en) DATA PROCESSING SYSTEM WITH CONDITIONAL EXECUTION OF ADVANCED COMPOUND COMMANDS
WO2007041242A3 (en) Systems and methods for monitoring software application quality
DE602004026713D1 (en) ARCHITECTURE FOR GENERATING INTERMEDIATE PREPARATIONS FOR PROGRAM CODE CONVERSION
TW200719229A (en) Method and apparatus for combined execution of native code and target code durign program code conversion
TW200705266A (en) System and method wherein conditional instructions unconditionally provide output
WO2007078913A3 (en) Cross-architecture execution optimization
DE60313652D1 (en) METHOD AND DEVICE FOR CONTROLLING THE CONVERSION OF PROGRAM CODES
WO2005024631A3 (en) Creating and checking runtime data types
WO2005109188A3 (en) Method and apparatus for automatically selecting a software application
HK1068425A1 (en) Method and apparatus for the emulation of high precision floating point instructions
WO2007038470A3 (en) Methods and apparatus for metering computer-based media presentation
WO2007125390A3 (en) Method and apparatus for moving area operator definition instructions statements within control flow structures
WO2004063834A3 (en) Method and apparatus for instruction compression
WO2006075286A3 (en) A processor and its instruction issue method
WO2006035038A3 (en) Method for testing control device software for a control device
WO2005119439A3 (en) Retargetable instruction set simulators
TW200636565A (en) Integer-based calculation method
WO2005069123A3 (en) Microprocessor, related method of operating the same and related instruction word
WO2007051634A3 (en) Method for generating a simulation program which can be executed on a host computer
ATE438464T1 (en) METHOD FOR OPERATIONAL CONTROL OF A COATING SYSTEM
DE60040733D1 (en) PROCESSOR AND METHOD FOR EXECUTING INSTRUCTIONS OF MULTIPLE INSTRUCTION SOURCES

Legal Events

Date Code Title Description
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1068425

Country of ref document: HK

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1068425

Country of ref document: HK

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20090702 AND 20090708

PE20 Patent expired after termination of 20 years

Expiry date: 20230923