IT1109988B - Unita' aritmetica per elaboratori di dati - Google Patents

Unita' aritmetica per elaboratori di dati

Info

Publication number
IT1109988B
IT1109988B IT21589/78A IT2158978A IT1109988B IT 1109988 B IT1109988 B IT 1109988B IT 21589/78 A IT21589/78 A IT 21589/78A IT 2158978 A IT2158978 A IT 2158978A IT 1109988 B IT1109988 B IT 1109988B
Authority
IT
Italy
Prior art keywords
arithmetic unit
data processors
processors
data
arithmetic
Prior art date
Application number
IT21589/78A
Other languages
English (en)
Other versions
IT7821589A0 (it
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of IT7821589A0 publication Critical patent/IT7821589A0/it
Application granted granted Critical
Publication of IT1109988B publication Critical patent/IT1109988B/it

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
    • G06F7/52—Multiplying; Dividing
    • G06F7/535—Dividing only
    • 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
    • G06F2207/5353—Restoring division

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
IT21589/78A 1977-04-28 1978-03-24 Unita' aritmetica per elaboratori di dati IT1109988B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/792,078 US4084254A (en) 1977-04-28 1977-04-28 Divider using carry save adder with nonperforming lookahead

Publications (2)

Publication Number Publication Date
IT7821589A0 IT7821589A0 (it) 1978-03-24
IT1109988B true IT1109988B (it) 1985-12-23

Family

ID=25155727

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21589/78A IT1109988B (it) 1977-04-28 1978-03-24 Unita' aritmetica per elaboratori di dati

Country Status (7)

Country Link
US (1) US4084254A (it)
JP (1) JPS53135534A (it)
BR (1) BR7802528A (it)
DE (1) DE2816711A1 (it)
FR (1) FR2389172A1 (it)
GB (1) GB1585595A (it)
IT (1) IT1109988B (it)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449196A (en) * 1979-04-27 1984-05-15 Pritchard Eric K Data processing system for multi-precision arithmetic
US4320464A (en) * 1980-05-05 1982-03-16 Control Data Corporation Binary divider with carry-save adders
JPS61166628A (ja) * 1985-01-18 1986-07-28 Hitachi Ltd 除算装置
US5012439A (en) * 1986-12-29 1991-04-30 Hughes Aircraft Company Method and apparatus for performing division
GB2202974A (en) * 1987-03-31 1988-10-05 Plessey Co Plc Digital divider
US5097436A (en) * 1990-01-09 1992-03-17 Digital Equipment Corporation High performance adder using carry predictions
EP0450751B1 (en) * 1990-04-02 1998-12-16 Advanced Micro Devices, Inc. High speed digital divider
EP0478745A4 (en) * 1990-04-04 1993-09-01 International Business Machines Corporation High performance interlock collapsing scism alu apparatus
JPH04172526A (ja) * 1990-11-07 1992-06-19 Toshiba Corp 浮動小数点除算器
US6116768A (en) * 1993-11-30 2000-09-12 Texas Instruments Incorporated Three input arithmetic logic unit with barrel rotator
US6173305B1 (en) * 1993-11-30 2001-01-09 Texas Instruments Incorporated Division by iteration employing subtraction and conditional source selection of a prior difference or a left shifted remainder
US6219688B1 (en) * 1993-11-30 2001-04-17 Texas Instruments Incorporated Method, apparatus and system for sum of plural absolute differences
US5619441A (en) * 1994-10-14 1997-04-08 International Business Machines Corporation High speed dynamic binary incrementer
JP2000165444A (ja) * 1998-11-30 2000-06-16 Nec Corp 光パケットスイッチ
US7127483B2 (en) * 2001-12-26 2006-10-24 Hewlett-Packard Development Company, L.P. Method and system of a microprocessor subtraction-division floating point divider
US6591286B1 (en) * 2002-01-18 2003-07-08 Neomagic Corp. Pipelined carry-lookahead generation for a fast incrementer
US20090094306A1 (en) * 2007-10-09 2009-04-09 Krishnakalin Gahn W Cordic rotation angle calculation
US8239430B2 (en) * 2007-10-09 2012-08-07 International Business Machines Corporation Accuracy improvement in CORDIC through precomputation of the error bias
US8402078B2 (en) * 2008-02-26 2013-03-19 International Business Machines Corporation Method, system and computer program product for determining required precision in fixed-point divide operations

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319057A (en) * 1965-06-14 1967-05-09 North American Aviation Inc Parallel division with separate carry storage
US3378677A (en) * 1965-10-04 1968-04-16 Ibm Serial divider
US3621218A (en) * 1967-09-29 1971-11-16 Hitachi Ltd High-speed divider utilizing carry save additions
DE2007353C3 (de) * 1970-02-18 1973-11-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Vierteiliges Addierwerk
JPS5517424B2 (it) * 1974-09-05 1980-05-12

Also Published As

Publication number Publication date
US4084254A (en) 1978-04-11
GB1585595A (en) 1981-03-04
IT7821589A0 (it) 1978-03-24
DE2816711A1 (de) 1978-11-02
FR2389172A1 (fr) 1978-11-24
BR7802528A (pt) 1979-02-13
FR2389172B1 (it) 1981-07-31
JPS5517426B2 (it) 1980-05-12
JPS53135534A (en) 1978-11-27

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