TW199927B - - Google Patents

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Publication number
TW199927B
TW199927B TW080106607A TW80106607A TW199927B TW 199927 B TW199927 B TW 199927B TW 080106607 A TW080106607 A TW 080106607A TW 80106607 A TW80106607 A TW 80106607A TW 199927 B TW199927 B TW 199927B
Authority
TW
Taiwan
Prior art keywords
bit
rounding
precision
mantissa
value
Prior art date
Application number
TW080106607A
Other languages
English (en)
Chinese (zh)
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of TW199927B publication Critical patent/TW199927B/zh

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
    • G06F7/483—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 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
    • 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
    • G06F7/483—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 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
    • G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
    • G06F7/487—Multiplying; Dividing
    • G06F7/4876—Multiplying
    • 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
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49936—Normalisation mentioned as feature only
    • 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
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49942—Significance control
    • G06F7/49947—Rounding
    • G06F7/49957—Implementation of IEEE-754 Standard

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computing Systems (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Complex Calculations (AREA)
TW080106607A 1990-08-24 1991-08-20 TW199927B (OSRAM)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22276390 1990-08-24
JP29383690 1990-10-30

Publications (1)

Publication Number Publication Date
TW199927B true TW199927B (OSRAM) 1993-02-11

Family

ID=26525068

Family Applications (1)

Application Number Title Priority Date Filing Date
TW080106607A TW199927B (OSRAM) 1990-08-24 1991-08-20

Country Status (6)

Country Link
US (1) US5276634A (OSRAM)
EP (3) EP0973089B1 (OSRAM)
KR (1) KR950001941B1 (OSRAM)
DE (3) DE69133072T2 (OSRAM)
HK (1) HK1007907A1 (OSRAM)
TW (1) TW199927B (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9146706B2 (en) 2006-05-05 2015-09-29 Qualcomm Incorporated Controlled-precision iterative arithmetic logic unit
TWI875192B (zh) * 2022-09-20 2025-03-01 美商蘋果公司 用於浮點冪操作的設備、方法及電腦可讀媒體

Families Citing this family (44)

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US5553015A (en) * 1994-04-15 1996-09-03 International Business Machines Corporation Efficient floating point overflow and underflow detection system
KR0139733B1 (ko) * 1994-04-29 1998-07-01 구자홍 부동 소수점 덧셈/뺄셈 연산기의 반올림 방법 및 장치
US5463575A (en) * 1994-06-24 1995-10-31 Rockwell International Corporation Reduced quantization noise from single-precision multiplier
US5563818A (en) * 1994-12-12 1996-10-08 International Business Machines Corporation Method and system for performing floating-point division using selected approximation values
EP0769738B1 (en) * 1995-10-20 2003-03-12 Kabushiki Kaisha Toshiba Logic circuit with carry selection technique
US5844830A (en) * 1996-08-07 1998-12-01 Sun Microsystems, Inc. Executing computer instrucrions by circuits having different latencies
US5841683A (en) * 1996-09-20 1998-11-24 International Business Machines Corporation Least significant bit and guard bit extractor
US6006316A (en) * 1996-12-20 1999-12-21 International Business Machines, Corporation Performing SIMD shift and arithmetic operation in non-SIMD architecture by operation on packed data of sub-operands and carry over-correction
EP0869432B1 (en) * 1997-04-01 2002-10-02 Matsushita Electric Industrial Co., Ltd. Multiplication method and multiplication circuit
US6263420B1 (en) * 1997-09-17 2001-07-17 Sony Corporation Digital signal processor particularly suited for decoding digital audio
US7043516B1 (en) * 1998-03-13 2006-05-09 Hewlett-Packard Development Company, L.P. Reduction of add-pipe logic by operand offset shift
US6282634B1 (en) * 1998-05-27 2001-08-28 Arm Limited Apparatus and method for processing data having a mixed vector/scalar register file
GB2339936B (en) * 1998-05-27 2002-09-25 Advanced Risc Mach Ltd Data processing apparatus and method for performing multiply-accumulate operations
US7890566B1 (en) * 2000-02-18 2011-02-15 Texas Instruments Incorporated Microprocessor with rounding dot product instruction
US6633896B1 (en) * 2000-03-30 2003-10-14 Intel Corporation Method and system for multiplying large numbers
US6629120B1 (en) * 2000-11-09 2003-09-30 Sun Microsystems, Inc. Method and apparatus for performing a mask-driven interval multiplication operation
US6976158B2 (en) * 2001-06-01 2005-12-13 Microchip Technology Incorporated Repeat instruction with interrupt
US20030005268A1 (en) * 2001-06-01 2003-01-02 Catherwood Michael I. Find first bit value instruction
US20030005269A1 (en) * 2001-06-01 2003-01-02 Conner Joshua M. Multi-precision barrel shifting
US7003543B2 (en) * 2001-06-01 2006-02-21 Microchip Technology Incorporated Sticky z bit
US6952711B2 (en) * 2001-06-01 2005-10-04 Microchip Technology Incorporated Maximally negative signed fractional number multiplication
US6934728B2 (en) * 2001-06-01 2005-08-23 Microchip Technology Incorporated Euclidean distance instructions
US6975679B2 (en) * 2001-06-01 2005-12-13 Microchip Technology Incorporated Configuration fuses for setting PWM options
US6728856B2 (en) 2001-06-01 2004-04-27 Microchip Technology Incorporated Modified Harvard architecture processor having program memory space mapped to data memory space
US7467178B2 (en) * 2001-06-01 2008-12-16 Microchip Technology Incorporated Dual mode arithmetic saturation processing
US6937084B2 (en) * 2001-06-01 2005-08-30 Microchip Technology Incorporated Processor with dual-deadtime pulse width modulation generator
US6985986B2 (en) * 2001-06-01 2006-01-10 Microchip Technology Incorporated Variable cycle interrupt disabling
US6601160B2 (en) 2001-06-01 2003-07-29 Microchip Technology Incorporated Dynamically reconfigurable data space
US6604169B2 (en) 2001-06-01 2003-08-05 Microchip Technology Incorporated Modulo addressing based on absolute offset
US7020788B2 (en) * 2001-06-01 2006-03-28 Microchip Technology Incorporated Reduced power option
US20030023836A1 (en) * 2001-06-01 2003-01-30 Michael Catherwood Shadow register array control instructions
US20020184566A1 (en) * 2001-06-01 2002-12-05 Michael Catherwood Register pointer trap
US20030028696A1 (en) * 2001-06-01 2003-02-06 Michael Catherwood Low overhead interrupt
US6552625B2 (en) 2001-06-01 2003-04-22 Microchip Technology Inc. Processor with pulse width modulation generator with fault input prioritization
US7007172B2 (en) * 2001-06-01 2006-02-28 Microchip Technology Incorporated Modified Harvard architecture processor having data memory space mapped to program memory space with erroneous execution protection
US6552567B1 (en) 2001-09-28 2003-04-22 Microchip Technology Incorporated Functional pathway configuration at a system/IC interface
US20040021483A1 (en) * 2001-09-28 2004-02-05 Brian Boles Functional pathway configuration at a system/IC interface
US7558816B2 (en) * 2001-11-21 2009-07-07 Sun Microsystems, Inc. Methods and apparatus for performing pixel average operations
US6941335B2 (en) * 2001-11-29 2005-09-06 International Business Machines Corporation Random carry-in for floating-point operations
US9405728B2 (en) 2013-09-05 2016-08-02 Altera Corporation Floating-point adder circuitry
US9483232B2 (en) * 2014-03-07 2016-11-01 Arm Limited Data processing apparatus and method for multiplying floating point operands
US9823897B2 (en) * 2015-09-25 2017-11-21 Arm Limited Apparatus and method for floating-point multiplication
US11422803B2 (en) * 2020-01-07 2022-08-23 SK Hynix Inc. Processing-in-memory (PIM) device
US11537323B2 (en) 2020-01-07 2022-12-27 SK Hynix Inc. Processing-in-memory (PIM) device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59117637A (ja) * 1982-12-24 1984-07-07 Toshiba Corp 浮動小数点乗算装置
JPS61213927A (ja) * 1985-03-18 1986-09-22 Hitachi Ltd 浮動小数点演算処理装置
JPH01302425A (ja) * 1988-05-31 1989-12-06 Toshiba Corp 浮動小数点加減算回路
JP3076046B2 (ja) * 1989-01-31 2000-08-14 日本電気株式会社 例外検出回路
US4975868A (en) * 1989-04-17 1990-12-04 International Business Machines Corporation Floating-point processor having pre-adjusted exponent bias for multiplication and division
US4926370A (en) * 1989-04-17 1990-05-15 International Business Machines Corporation Method and apparatus for processing postnormalization and rounding in parallel
US5040138A (en) * 1989-08-02 1991-08-13 Cyrix Corporation Circuit for simultaneous arithmetic calculation and normalization estimation
US5111421A (en) * 1990-02-26 1992-05-05 General Electric Company System for performing addition and subtraction of signed magnitude floating point binary numbers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9146706B2 (en) 2006-05-05 2015-09-29 Qualcomm Incorporated Controlled-precision iterative arithmetic logic unit
TWI875192B (zh) * 2022-09-20 2025-03-01 美商蘋果公司 用於浮點冪操作的設備、方法及電腦可讀媒體

Also Published As

Publication number Publication date
DE69132597D1 (de) 2001-06-13
DE69132807T2 (de) 2002-06-27
KR950001941B1 (ko) 1995-03-07
DE69132597T2 (de) 2002-04-18
EP0820005A1 (en) 1998-01-21
EP0973089A2 (en) 2000-01-19
HK1007907A1 (en) 2003-04-24
KR920004960A (ko) 1992-03-28
EP0472148A3 (en) 1993-07-21
EP0820005B1 (en) 2001-11-07
DE69132807D1 (de) 2001-12-13
EP0973089B1 (en) 2002-07-17
DE69133072D1 (de) 2002-08-22
DE69133072T2 (de) 2003-03-20
HK1013343A1 (en) 1999-08-20
EP0472148B1 (en) 2001-05-09
HK1023424A1 (en) 2000-09-08
EP0472148A2 (en) 1992-02-26
US5276634A (en) 1994-01-04
EP0973089A3 (en) 2000-01-26

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