DE68927154D1 - Arithmetische Reziprokwertschaltung mit Festwertspeichertabelle - Google Patents

Arithmetische Reziprokwertschaltung mit Festwertspeichertabelle

Info

Publication number
DE68927154D1
DE68927154D1 DE68927154T DE68927154T DE68927154D1 DE 68927154 D1 DE68927154 D1 DE 68927154D1 DE 68927154 T DE68927154 T DE 68927154T DE 68927154 T DE68927154 T DE 68927154T DE 68927154 D1 DE68927154 D1 DE 68927154D1
Authority
DE
Germany
Prior art keywords
read
value circuit
memory table
reciprocal value
arithmetic
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 - Fee Related
Application number
DE68927154T
Other languages
English (en)
Other versions
DE68927154T2 (de
Inventor
Akira C O Intellectu Yamaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE68927154D1 publication Critical patent/DE68927154D1/de
Publication of DE68927154T2 publication Critical patent/DE68927154T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G06F7/52—Multiplying; Dividing
    • G06F7/535—Dividing only
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/035—Reduction of table size
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/12—Reciprocal functions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/535—Indexing scheme relating to groups G06F7/535 - G06F7/5375
    • G06F2207/5354—Using table lookup, e.g. for digit selection in division by digit recurrence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/535—Indexing scheme relating to groups G06F7/535 - G06F7/5375
    • G06F2207/5356—Via reciprocal, i.e. calculate reciprocal only, or calculate reciprocal first and then the quotient from the reciprocal and the numerator

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computing Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Error Detection And Correction (AREA)
DE68927154T 1988-12-08 1989-12-08 Arithmetische Reziprokwertschaltung mit Festwertspeichertabelle Expired - Fee Related DE68927154T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63310707A JPH02156328A (ja) 1988-12-08 1988-12-08 逆数回路

Publications (2)

Publication Number Publication Date
DE68927154D1 true DE68927154D1 (de) 1996-10-17
DE68927154T2 DE68927154T2 (de) 1997-02-13

Family

ID=18008503

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68927154T Expired - Fee Related DE68927154T2 (de) 1988-12-08 1989-12-08 Arithmetische Reziprokwertschaltung mit Festwertspeichertabelle

Country Status (5)

Country Link
US (1) US5012438A (de)
EP (1) EP0372566B1 (de)
JP (1) JPH02156328A (de)
KR (1) KR920010183B1 (de)
DE (1) DE68927154T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274580A (en) * 1990-03-21 1993-12-28 Bull, S.A. Method for calculating the inverse of a number, and computer for performing the method
FR2660086B1 (fr) * 1990-03-21 1992-06-05 Bull Sa Procede pour calculer l'inverse d'un nombre et calculateur pour la mise en óoeuvre dudit procede.
US5539682A (en) * 1992-08-07 1996-07-23 Lsi Logic Corporation Seed generation technique for iterative, convergent digital computations
US5623579A (en) * 1993-05-27 1997-04-22 Martin Marietta Energy Systems, Inc. Automated method for the systematic interpretation of resonance peaks in spectrum data
US5818744A (en) * 1994-02-02 1998-10-06 National Semiconductor Corp. Circuit and method for determining multiplicative inverses with a look-up table
US5563818A (en) * 1994-12-12 1996-10-08 International Business Machines Corporation Method and system for performing floating-point division using selected approximation values
US6240338B1 (en) 1995-08-22 2001-05-29 Micron Technology, Inc. Seed ROM for reciprocal computation
EP0808069B1 (de) * 1996-05-14 2003-05-02 Daewoo Electronics Corporation Quantisierer für ein Videokodierungssystem
US5870321A (en) * 1996-06-28 1999-02-09 Intel Corporation Method and apparatus to reduce the size of rom used in mathematical computatiions
US5768171A (en) * 1996-06-28 1998-06-16 Intel Corporation Method and apparatus for improving the precision or area of a memory table used in floating-point computations
US5900882A (en) * 1996-11-15 1999-05-04 Samsung Electronics Co., Ltd. Determining texture coordinates in computer graphics
US6260054B1 (en) 1998-10-29 2001-07-10 Neomagic Corp. Reciprocal generator using piece-wise-linear segments of varying width with floating-point format
US6553537B1 (en) * 1998-12-11 2003-04-22 Matsushita Electric Industrial Co., Ltd. Reed-Solomon decoding apparatus and control method therefor
US6735610B1 (en) 1999-04-29 2004-05-11 Walter E. Pelton Apparatus, methods, and computer program products for determining the coefficients of a function with decreased latency
JP3447614B2 (ja) * 1999-05-31 2003-09-16 株式会社東芝 分数演算器、グラフィック用セットアップエンジン、分数演算方法、及び機械読み出し可能な記憶媒体
US6922712B2 (en) 2000-02-26 2005-07-26 Walter E. Pelton Apparatus, methods, and computer program products for accurately determining the coefficients of a function
AU2001275444A1 (en) * 2000-06-09 2001-12-17 K. Walt Herridge Apparatus, methods and computer program products for performing high speed division calculations
US6820104B2 (en) 2000-06-09 2004-11-16 Walter Eugene Pelton Apparatus, methods, and computer program products for reducing the number of computations and number of required stored values for information processing methods
CA2329104C (en) 2000-12-20 2005-05-24 Sicon Video Corporation Method and apparatus for calculating a reciprocal
US7747667B2 (en) 2005-02-16 2010-06-29 Arm Limited Data processing apparatus and method for determining an initial estimate of a result value of a reciprocal operation
US8015228B2 (en) 2005-02-16 2011-09-06 Arm Limited Data processing apparatus and method for performing a reciprocal operation on an input value to produce a result value
KR100653675B1 (ko) * 2005-12-06 2006-12-05 엠텍비젼 주식회사 역수 연산 장치 및 방법
CN106775587B (zh) * 2016-11-30 2020-04-14 上海兆芯集成电路有限公司 计算机指令的执行方法以及使用此方法的装置
US10503473B1 (en) * 2018-05-30 2019-12-10 Apple Inc. Floating-point division alternative techniques

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648038A (en) * 1969-04-25 1972-03-07 Ibm Apparatus and method for obtaining the reciprocal of a number and the quotient of two numbers
US3633018A (en) * 1969-12-18 1972-01-04 Ibm Digital division by reciprocal conversion technique
US3777132A (en) * 1972-02-23 1973-12-04 Burroughs Corp Method and apparatus for obtaining the reciprocal of a number and the quotient of two numbers
US3917935A (en) * 1974-12-23 1975-11-04 United Technologies Corp Reduction of look-up table capacity
JPS60142738A (ja) * 1983-12-30 1985-07-27 Hitachi Ltd 内挿近似を使用する除算装置
US4718032A (en) * 1985-02-14 1988-01-05 Prime Computer, Inc. Method and apparatus for effecting range transformation in a digital circuitry
US5179659A (en) * 1987-05-08 1993-01-12 Sun Microsystems, Inc. Method and apparatus for deriving instantaneous reciprocals of the homogenous coordinate w for use in defining images on a display
US4823301A (en) * 1987-10-22 1989-04-18 Tektronix, Inc. Method and circuit for computing reciprocals

Also Published As

Publication number Publication date
JPH02156328A (ja) 1990-06-15
EP0372566A2 (de) 1990-06-13
KR900010544A (ko) 1990-07-07
EP0372566B1 (de) 1996-09-11
DE68927154T2 (de) 1997-02-13
US5012438A (en) 1991-04-30
EP0372566A3 (de) 1992-11-19
KR920010183B1 (ko) 1992-11-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee