DE3340362A1 - Verfahren und vorrichtung zur division von bcd-zahlen - Google Patents

Verfahren und vorrichtung zur division von bcd-zahlen

Info

Publication number
DE3340362A1
DE3340362A1 DE19833340362 DE3340362A DE3340362A1 DE 3340362 A1 DE3340362 A1 DE 3340362A1 DE 19833340362 DE19833340362 DE 19833340362 DE 3340362 A DE3340362 A DE 3340362A DE 3340362 A1 DE3340362 A1 DE 3340362A1
Authority
DE
Germany
Prior art keywords
quotient
divisor
determination table
value
dividend
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
DE19833340362
Other languages
German (de)
English (en)
Other versions
DE3340362C2 (OSRAM
Inventor
Masaharu Hadano Fukuta
Sako Ishikawa
Toru Ohtsuki
Yoshio Oshima
Hideaki Yabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3340362A1 publication Critical patent/DE3340362A1/de
Application granted granted Critical
Publication of DE3340362C2 publication Critical patent/DE3340362C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/4915—Multiplying; Dividing
    • G06F7/4917—Dividing

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Executing Machine-Instructions (AREA)
  • Detection And Correction Of Errors (AREA)
  • Complex Calculations (AREA)
DE19833340362 1982-11-09 1983-11-08 Verfahren und vorrichtung zur division von bcd-zahlen Granted DE3340362A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57196618A JPS5987543A (ja) 1982-11-09 1982-11-09 ２進化１０進数除算方式

Publications (2)

Publication Number Publication Date
DE3340362A1 true DE3340362A1 (de) 1984-05-10
DE3340362C2 DE3340362C2 (OSRAM) 1988-12-01

Family

ID=16360744

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833340362 Granted DE3340362A1 (de) 1982-11-09 1983-11-08 Verfahren und vorrichtung zur division von bcd-zahlen

Country Status (3)

Country Link
US (1) US4635220A (OSRAM)
JP (1) JPS5987543A (OSRAM)
DE (1) DE3340362A1 (OSRAM)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817048A (en) * 1986-08-11 1989-03-28 Amdahl Corporation Divider with quotient digit prediction
US4799181A (en) * 1986-09-30 1989-01-17 Honeywell Bull Inc. BCD arithmetic using binary arithmetic and logical operations
JPH0833816B2 (ja) * 1988-10-08 1996-03-29 日本電気株式会社 固定小数点除算方式
US4992968A (en) * 1989-02-17 1991-02-12 Digital Equipment Corporation Division method and apparatus including use of a Z--Z plot to select acceptable quotient bits
US5039350A (en) * 1990-04-27 1991-08-13 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Method for the decomposition of halogenated organic compounds in a contaminated medium
DE4121106A1 (de) * 1991-06-26 1993-01-07 Siemens Nixdorf Inf Syst Verfahren fuer datenverarbeitungsanlagen zur radix-division eines dividenden und eines divisors von jeweils beliebiger laenge und schaltungsanordnung zur durchfuehrung des verfahrens
JP2541758B2 (ja) * 1993-06-02 1996-10-09 日本電気株式会社 剰余算出回路
US7467174B2 (en) 2004-09-23 2008-12-16 Wisconsin Alumni Research Foundation Processing unit having decimal floating-point divider using Newton-Raphson iteration
US7519649B2 (en) 2005-02-10 2009-04-14 International Business Machines Corporation System and method for performing decimal division
JP6064435B2 (ja) * 2012-08-21 2017-01-25 富士通株式会社 演算回路、演算処理装置、及び除算方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193705B (de) * 1961-11-15 1965-05-26 Ibm Einrichtung zur Division von Dezimalzahlen
DE1203504B (de) * 1962-11-05 1965-10-21 Ibm Divisionseinrichtung
DE3303269A1 (de) * 1982-02-16 1983-08-25 Hitachi, Ltd., Tokyo Verfahren und vorrichtung zur division von bcd-zahlen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610905A (en) * 1965-04-15 1971-10-05 Honeywell Inf Systems Division system generating a variable length quotient in which the unit of information exceeds the capacity of the operating registers
US3578961A (en) * 1968-03-06 1971-05-18 Honeywell Inc Preconditioned divisor for expedite division by successive subtraction
NL7101257A (OSRAM) * 1971-01-30 1972-08-01
NL7101258A (OSRAM) * 1971-01-30 1972-08-01
JPS5311179B2 (OSRAM) * 1972-11-27 1978-04-19
JPS56123038A (en) * 1980-03-04 1981-09-26 Fujitsu Ltd Division control system
US4466077A (en) * 1981-09-25 1984-08-14 International Business Machines Corporation Method and apparatus for division employing associative memory

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193705B (de) * 1961-11-15 1965-05-26 Ibm Einrichtung zur Division von Dezimalzahlen
DE1203504B (de) * 1962-11-05 1965-10-21 Ibm Divisionseinrichtung
DE3303269A1 (de) * 1982-02-16 1983-08-25 Hitachi, Ltd., Tokyo Verfahren und vorrichtung zur division von bcd-zahlen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SPANIOL, Arithmetik in Rechenanlagen, Teubner Studienbücher, 1976, S.118-119 *

Also Published As

Publication number Publication date
DE3340362C2 (OSRAM) 1988-12-01
US4635220A (en) 1987-01-06
JPS5987543A (ja) 1984-05-21
JPH0413735B2 (OSRAM) 1992-03-10

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee