GB0322325D0 - 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
GB0322325D0
GB0322325D0 GB0322325A GB0322325A GB0322325D0 GB 0322325 D0 GB0322325 D0 GB 0322325D0 GB 0322325 A GB0322325 A GB 0322325A GB 0322325 A GB0322325 A GB 0322325A GB 0322325 D0 GB0322325 D0 GB 0322325D0
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.)
Granted
Application number
GB0322325A
Other versions
GB2403310B (en
GB2403310A (en
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 true GB0322325D0 (en) 2003-10-22
GB2403310A GB2403310A (en) 2004-12-29
GB2403310B 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631859A (en) * 1994-10-27 1997-05-20 Hewlett-Packard Company Floating point arithmetic unit having logic for quad precision arithmetic
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
HK1068425A1 (en) 2005-04-29
GB0315350D0 (en) 2003-08-06
GB2403310B (en) 2007-03-28
GB2403310A (en) 2004-12-29
TW200506720A (en) 2005-02-16

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Expiry date: 20230923