DE60232932D1 - Verfahren und Vorrichtung zum Korrigieren der Vorhersage der höchstwertigen Eins - Google Patents

Verfahren und Vorrichtung zum Korrigieren der Vorhersage der höchstwertigen Eins

Info

Publication number
DE60232932D1
DE60232932D1 DE60232932T DE60232932T DE60232932D1 DE 60232932 D1 DE60232932 D1 DE 60232932D1 DE 60232932 T DE60232932 T DE 60232932T DE 60232932 T DE60232932 T DE 60232932T DE 60232932 D1 DE60232932 D1 DE 60232932D1
Authority
DE
Germany
Prior art keywords
prediction
correcting
significant
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.)
Expired - Lifetime
Application number
DE60232932T
Other languages
English (en)
Inventor
Robert Rogenmoser
Lief O'donnell
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.)
Broadcom Corp
Original Assignee
Broadcom 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 Broadcom Corp filed Critical Broadcom Corp
Application granted granted Critical
Publication of DE60232932D1 publication Critical patent/DE60232932D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G06F7/74—Selecting or encoding within a word the position of one or more bits having a specified value, e.g. most or least significant one or zero detection, priority encoders
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computing Systems (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Advance Control (AREA)
  • Complex Calculations (AREA)
DE60232932T 2001-05-04 2002-05-01 Verfahren und Vorrichtung zum Korrigieren der Vorhersage der höchstwertigen Eins Expired - Lifetime DE60232932D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/849,052 US6988115B2 (en) 2001-05-04 2001-05-04 Method and apparatus to correct leading one prediction

Publications (1)

Publication Number Publication Date
DE60232932D1 true DE60232932D1 (de) 2009-08-27

Family

ID=25304948

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60232932T Expired - Lifetime DE60232932D1 (de) 2001-05-04 2002-05-01 Verfahren und Vorrichtung zum Korrigieren der Vorhersage der höchstwertigen Eins

Country Status (3)

Country Link
US (2) US6988115B2 (de)
EP (1) EP1255188B1 (de)
DE (1) DE60232932D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6988115B2 (en) 2001-05-04 2006-01-17 Broadcom Corporation Method and apparatus to correct leading one prediction
US7707236B2 (en) * 2004-08-13 2010-04-27 Analog Devices, Inc. Methods and apparatus for an efficient floating point ALU
US20070038693A1 (en) * 2005-08-10 2007-02-15 Christian Jacobi Method and Processor for Performing a Floating-Point Instruction Within a Processor
US7668892B2 (en) 2005-08-25 2010-02-23 Arm Limited Data processing apparatus and method for normalizing a data value
US8326903B2 (en) * 2008-01-04 2012-12-04 International Business Machines Corporation System and method for improved vector analysis
US9830129B2 (en) * 2013-11-21 2017-11-28 Samsung Electronics Co., Ltd. High performance floating-point adder with full in-line denormal/subnormal support
US10089073B2 (en) * 2015-01-30 2018-10-02 Huawei Technologies Co., Ltd. Method and apparatus for converting from integer to floating point representation
JP6871513B2 (ja) * 2017-05-22 2021-05-12 富士通株式会社 演算器及び演算器の制御方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922446A (en) 1988-04-01 1990-05-01 Digital Equipment Corporation Apparatus and method for floating point normalization prediction
JPH05241792A (ja) 1992-02-27 1993-09-21 Nec Corp 浮動小数点加減算方式および装置
EP0663635A1 (de) 1993-12-15 1995-07-19 Firma Erika Köchler Schneller serieller Vergleicher
US5684729A (en) 1994-09-19 1997-11-04 Hitachi, Ltd. Floating-point addition/substraction processing apparatus and method thereof
US5867407A (en) 1995-06-30 1999-02-02 Digital Equipment Corporation Normalization shift prediction independent of operand substraction
KR970016936A (ko) 1995-09-06 1997-04-28 엘리 와이스 최상위 디지트를 결정하는 장치 및 방법
US5633819A (en) * 1995-10-24 1997-05-27 Exponential Technology, Inc. Inexact leading-one/leading-zero prediction integrated with a floating-point adder
US5881217A (en) * 1996-11-27 1999-03-09 Hewlett-Packard Company Input comparison circuitry and method for a programmable state machine
JP3544846B2 (ja) * 1997-02-13 2004-07-21 株式会社東芝 論理回路及び浮動小数点演算装置
US5957997A (en) 1997-04-25 1999-09-28 International Business Machines Corporation Efficient floating point normalization mechanism
US6085208A (en) 1997-10-23 2000-07-04 Advanced Micro Devices, Inc. Leading one prediction unit for normalizing close path subtraction results within a floating point arithmetic unit
US5974432A (en) 1997-12-05 1999-10-26 Advanced Micro Devices, Inc. On-the-fly one-hot encoding of leading zero count
US6571267B1 (en) * 1999-03-10 2003-05-27 Kabushiki Kaisha Toshiba Floating point addition/subtraction execution unit
US6405232B1 (en) * 1999-08-19 2002-06-11 National Semiconductor Corporation Leading bit prediction with in-parallel correction
US6499044B1 (en) * 1999-11-12 2002-12-24 Jeffrey S. Brooks Leading zero/one anticipator for floating point
US6594679B1 (en) * 2000-03-20 2003-07-15 International Business Machines Corporation Leading-zero anticipator having an independent sign bit determination module
US6988115B2 (en) 2001-05-04 2006-01-17 Broadcom Corporation Method and apparatus to correct leading one prediction

Also Published As

Publication number Publication date
US6988115B2 (en) 2006-01-17
US20020165887A1 (en) 2002-11-07
EP1255188A2 (de) 2002-11-06
EP1255188B1 (de) 2009-07-15
US20050223055A1 (en) 2005-10-06
EP1255188A3 (de) 2005-03-30

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Legal Events

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