BE780699A - Procede et dispositif pour former une representation d'un nombre a virgule flottante - Google Patents

Procede et dispositif pour former une representation d'un nombre a virgule flottante

Info

Publication number
BE780699A
BE780699A BE780699A BE780699A BE780699A BE 780699 A BE780699 A BE 780699A BE 780699 A BE780699 A BE 780699A BE 780699 A BE780699 A BE 780699A BE 780699 A BE780699 A BE 780699A
Authority
BE
Belgium
Prior art keywords
representation
forming
floating number
floating
Prior art date
Application number
BE780699A
Other languages
English (en)
Inventor
R Morris
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of BE780699A publication Critical patent/BE780699A/fr

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
    • 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
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49942—Significance control

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Computing Systems (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
BE780699A 1971-03-19 1972-03-15 Procede et dispositif pour former une representation d'un nombre a virgule flottante BE780699A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12601671A 1971-03-19 1971-03-19

Publications (1)

Publication Number Publication Date
BE780699A true BE780699A (fr) 1972-07-03

Family

ID=22422554

Family Applications (1)

Application Number Title Priority Date Filing Date
BE780699A BE780699A (fr) 1971-03-19 1972-03-15 Procede et dispositif pour former une representation d'un nombre a virgule flottante

Country Status (9)

Country Link
US (1) US3742198A (fr)
JP (1) JPS5221860B1 (fr)
BE (1) BE780699A (fr)
CA (1) CA991750A (fr)
DE (1) DE2212967C3 (fr)
FR (1) FR2129777A5 (fr)
GB (1) GB1375250A (fr)
IT (1) IT952219B (fr)
NL (1) NL163643C (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872442A (en) * 1972-12-14 1975-03-18 Sperry Rand Corp System for conversion between coded byte and floating point format
US3930232A (en) * 1973-11-23 1975-12-30 Raytheon Co Format insensitive digital computer
US3924111A (en) * 1974-09-25 1975-12-02 Charles R Farris Electronic calculators for navigational purposes
US4038538A (en) * 1975-08-18 1977-07-26 Burroughs Corporation Integer and floating point to binary converter
JPS5597426U (fr) * 1978-12-23 1980-07-07
US4608554A (en) * 1982-09-14 1986-08-26 Mobil Oil Corporation Asynchronous parallel fixed point converter
US4617641A (en) * 1983-10-19 1986-10-14 Hitachi, Ltd. Operation unit for floating point data having a variable length exponent part
US4603323A (en) * 1984-05-25 1986-07-29 International Business Machines Corporation Method for extending the exponent range of an IBM 370-type floating point processor
JPS61123928A (ja) * 1984-09-05 1986-06-11 Hitachi Ltd 浮動小数点データ処理装置
US4847802A (en) * 1986-06-12 1989-07-11 Advanced Micro Devices, Inc. Method and apparatus for identifying the precision of an operand in a multiprecision floating-point processor
FR2613155B1 (fr) * 1987-03-27 1989-06-23 Cit Alcatel Procede de codage de nombres sous forme binaire et dispositif pour sa mise en oeuvre
JPH0284122A (ja) * 1988-03-03 1990-03-26 Hideki Kikuchi たもの保持具
US20070260665A1 (en) * 2006-04-20 2007-11-08 Chengpu Wang Method of Specifying and Tracking Precision in Floating-point Calculation
US8412760B2 (en) * 2008-07-22 2013-04-02 International Business Machines Corporation Dynamic range adjusting floating point execution unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056550A (en) * 1960-01-18 1962-10-02 Bendix Corp Variable-exponent computers
US3434114A (en) * 1966-09-23 1969-03-18 Ibm Variable floating point precision
US3496550A (en) * 1967-02-27 1970-02-17 Burroughs Corp Digital processor with variable field length operands using a first and second memory stack
US3539790A (en) * 1967-07-03 1970-11-10 Burroughs Corp Character oriented data processor with floating decimal point multiplication
US3569685A (en) * 1968-07-11 1971-03-09 Fairchild Camera Instr Co Precision controlled arithmetic processing system

Also Published As

Publication number Publication date
US3742198A (en) 1973-06-26
NL163643B (nl) 1980-04-15
DE2212967B2 (de) 1974-07-11
IT952219B (it) 1973-07-20
CA991750A (en) 1976-06-22
NL163643C (nl) 1980-09-15
FR2129777A5 (fr) 1972-10-27
NL7203292A (fr) 1972-09-21
DE2212967A1 (de) 1972-10-12
GB1375250A (fr) 1974-11-27
DE2212967C3 (de) 1975-03-13
JPS5221860B1 (fr) 1977-06-14

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WESTERN ELECTRIC CY INC.

Effective date: 19840315