IL86792A - Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure - Google Patents

Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure

Info

Publication number
IL86792A
IL86792A IL86792A IL8679288A IL86792A IL 86792 A IL86792 A IL 86792A IL 86792 A IL86792 A IL 86792A IL 8679288 A IL8679288 A IL 8679288A IL 86792 A IL86792 A IL 86792A
Authority
IL
Israel
Prior art keywords
accelerating
subtraction
floating point
point addition
effective
Prior art date
Application number
IL86792A
Other languages
English (en)
Original Assignee
Digital Equipment 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 Digital Equipment Corp filed Critical Digital Equipment Corp
Publication of IL86792A publication Critical patent/IL86792A/xx

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
    • G06F7/485—Adding; Subtracting
    • 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
    • G06F7/50—Adding; Subtracting
    • 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
    • G06F2207/544—Indexing scheme relating to group G06F7/544
    • G06F2207/5442—Absolute difference
    • 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
    • G06F7/49936—Normalisation mentioned as feature only
    • 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
    • G06F7/49947—Rounding

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Executing Machine-Instructions (AREA)
  • Devices For Executing Special Programs (AREA)
IL86792A 1987-06-19 1988-06-19 Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure IL86792A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/064,836 US4852039A (en) 1987-06-19 1987-06-19 Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure

Publications (1)

Publication Number Publication Date
IL86792A true IL86792A (en) 1991-06-30

Family

ID=22058548

Family Applications (1)

Application Number Title Priority Date Filing Date
IL86792A IL86792A (en) 1987-06-19 1988-06-19 Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure

Country Status (8)

Country Link
US (1) US4852039A (xx)
EP (1) EP0296070B1 (xx)
JP (1) JPH01321516A (xx)
KR (1) KR930004329B1 (xx)
AU (1) AU613050B2 (xx)
CA (1) CA1289257C (xx)
DE (1) DE3851792T2 (xx)
IL (1) IL86792A (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117384A (en) * 1990-01-24 1992-05-26 International Business Machines Corporation Method and apparatus for exponent adder
US5136536A (en) * 1990-05-04 1992-08-04 Weitek Corporation Floating-point ALU with parallel paths
JPH0823812B2 (ja) * 1990-08-24 1996-03-06 松下電器産業株式会社 浮動小数点データの演算方法および演算装置
JPH05216620A (ja) * 1991-10-31 1993-08-27 Internatl Business Mach Corp <Ibm> 浮動小数点を正規化する方法及び回路
US5247471A (en) * 1991-12-13 1993-09-21 International Business Machines Corporation Radix aligner for floating point addition and subtraction
US5646875A (en) * 1995-02-27 1997-07-08 International Business Machines Corporation Denormalization system and method of operation
US5668984A (en) * 1995-02-27 1997-09-16 International Business Machines Corporation Variable stage load path and method of operation
US5742533A (en) * 1996-05-21 1998-04-21 International Business Machines Corporation Method and apparatus for modulus error checking
US8667042B2 (en) 2010-09-24 2014-03-04 Intel Corporation Functional unit for vector integer multiply add instruction
US9092213B2 (en) 2010-09-24 2015-07-28 Intel Corporation Functional unit for vector leading zeroes, vector trailing zeroes, vector operand 1s count and vector parity calculation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595346A (ja) * 1982-06-30 1984-01-12 Fujitsu Ltd 演算制御方式
JPS59188740A (ja) * 1983-04-11 1984-10-26 Hitachi Ltd フロ−テイング加算器
US4639887A (en) * 1984-02-24 1987-01-27 The United States Of America As Represented By The United States Department Of Energy Bifurcated method and apparatus for floating point addition with decreased latency time
US4562553A (en) * 1984-03-19 1985-12-31 Analogic Corporation Floating point arithmetic system and method with rounding anticipation

Also Published As

Publication number Publication date
EP0296070A3 (en) 1991-01-30
JPH01321516A (ja) 1989-12-27
EP0296070B1 (en) 1994-10-12
AU1813888A (en) 1988-12-22
DE3851792D1 (de) 1994-11-17
KR930004329B1 (ko) 1993-05-26
KR890000966A (ko) 1989-03-17
EP0296070A2 (en) 1988-12-21
US4852039A (en) 1989-07-25
JPH0545981B2 (xx) 1993-07-12
DE3851792T2 (de) 1995-05-04
CA1289257C (en) 1991-09-17
AU613050B2 (en) 1991-07-25

Similar Documents

Publication Publication Date Title
AU573188B2 (en) Method and apparatus for prefetching instructions
HUT47352A (en) Apparatus for treating seed-corns
EP0320637A3 (en) Method and apparatus for cancelling echoes
GB2122580B (en) Turnover apparatus
GB8811379D0 (en) Method &amp; apparatus
DE3376189D1 (en) Procedure and means for improving the milking process
GB2106143B (en) Process and apparatus for steelmaking
DE3167257D1 (en) Transmission methods and apparatus for implementing the method
GB2119592B (en) Pulse-counting method and apparatus
DE3374925D1 (en) Method and apparatus for the generation of characters
IL64556A0 (en) Method and apparatus for batterymolding
IL86792A (en) Apparatus and method for accelerating floating point addition and subtraction operations by accelerating the effective subtraction procedure
DE3374816D1 (en) Method and apparatus for entering graphics
GB8804758D0 (en) Decatizing method &amp; apparatus
GB8308594D0 (en) Curved ceiling-building method
GB2127543B (en) Track curve lining method and apparatus
GB2143079B (en) A method and apparatus for the corpuscular irradiation of a target
ZA884831B (en) Method and apparatus for photoepilation and electroepilation
EP0158489A3 (en) Handling apparatus &amp; method
GB8509024D0 (en) Desludging method &amp; apparatus
GB2211860B (en) Method and apparatus for the direct reduction of iron
GB2155771B (en) Apparatus for treating an underwater surface
GB2213403B (en) Method and apparatus for growing cdxhg1-xte.
GB2044050B (en) Method of the apparatus for enhancing televsision picturesetc
GB2138113B (en) Target apparatus