KR101528340B1 - 부동 소수점 유닛에서 오버시프트의 빠른 검출을 위한 메카니즘 - Google Patents
부동 소수점 유닛에서 오버시프트의 빠른 검출을 위한 메카니즘 Download PDFInfo
- Publication number
- KR101528340B1 KR101528340B1 KR1020117023161A KR20117023161A KR101528340B1 KR 101528340 B1 KR101528340 B1 KR 101528340B1 KR 1020117023161 A KR1020117023161 A KR 1020117023161A KR 20117023161 A KR20117023161 A KR 20117023161A KR 101528340 B1 KR101528340 B1 KR 101528340B1
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- Prior art keywords
- mantissa
- overshift
- floating point
- unit
- shift
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
- G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
-
- 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
- G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
- G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
- G06F5/012—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising in floating-point computations
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Nonlinear Science (AREA)
- Executing Machine-Instructions (AREA)
- Complex Calculations (AREA)
- Advance Control (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/404,426 US8402075B2 (en) | 2009-03-16 | 2009-03-16 | Mechanism for fast detection of overshift in a floating point unit of a processing device |
| US12/404,426 | 2009-03-16 | ||
| PCT/US2010/026908 WO2010107650A1 (en) | 2009-03-16 | 2010-03-11 | Mechanism for fast detection of overshift in a floating point unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20120003878A KR20120003878A (ko) | 2012-01-11 |
| KR101528340B1 true KR101528340B1 (ko) | 2015-06-11 |
Family
ID=42104634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020117023161A Active KR101528340B1 (ko) | 2009-03-16 | 2010-03-11 | 부동 소수점 유닛에서 오버시프트의 빠른 검출을 위한 메카니즘 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8402075B2 (enExample) |
| EP (1) | EP2409219B1 (enExample) |
| JP (1) | JP5719341B2 (enExample) |
| KR (1) | KR101528340B1 (enExample) |
| CN (1) | CN102349049B (enExample) |
| WO (1) | WO2010107650A1 (enExample) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8694572B2 (en) * | 2010-07-06 | 2014-04-08 | Silminds, Llc, Egypt | Decimal floating-point fused multiply-add unit |
| US9354875B2 (en) * | 2012-12-27 | 2016-05-31 | Intel Corporation | Enhanced loop streaming detector to drive logic optimization |
| US20150193203A1 (en) * | 2014-01-07 | 2015-07-09 | Nvidia Corporation | Efficiency in a fused floating-point multiply-add unit |
| US9720646B2 (en) * | 2015-11-12 | 2017-08-01 | Arm Limited | Redundant representation of numeric value using overlap bits |
| US9928031B2 (en) * | 2015-11-12 | 2018-03-27 | Arm Limited | Overlap propagation operation |
| US10402168B2 (en) * | 2016-10-01 | 2019-09-03 | Intel Corporation | Low energy consumption mantissa multiplication for floating point multiply-add operations |
| US11200186B2 (en) | 2018-06-30 | 2021-12-14 | Intel Corporation | Apparatuses, methods, and systems for operations in a configurable spatial accelerator |
| US11907713B2 (en) | 2019-12-28 | 2024-02-20 | Intel Corporation | Apparatuses, methods, and systems for fused operations using sign modification in a processing element of a configurable spatial accelerator |
| US12086080B2 (en) | 2020-09-26 | 2024-09-10 | Intel Corporation | Apparatuses, methods, and systems for a configurable accelerator having dataflow execution circuits |
| KR102706124B1 (ko) * | 2021-12-14 | 2024-09-12 | 서울대학교산학협력단 | 부동 소수점 연산 방법 및 장치 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950029924A (ko) * | 1994-04-29 | 1995-11-24 | 한탁돈 | 부동 소수점점 덧셈/뺄셈 연산기의 반올림 방법 및 장치 |
| KR970016935A (ko) * | 1995-09-29 | 1997-04-28 | 김광호 | 부동소숫점 덧셈기에서 스티키비트 검출방법 |
| KR20020037278A (ko) * | 2000-11-13 | 2002-05-18 | 가네꼬 히사시 | 축소된 회로 규모로 고정 소수점 데이터를 생성하는 회로및 방법 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5502401A (en) * | 1995-04-26 | 1996-03-26 | Texas Instruments Incorporated | Controllable width or gate |
| US5757686A (en) * | 1995-11-30 | 1998-05-26 | Hewlett-Packard Company | Method of decoupling the high order portion of the addend from the multiply result in an FMAC |
| JPH09204295A (ja) * | 1996-01-29 | 1997-08-05 | Kofu Nippon Denki Kk | スティッキービット検出回路 |
| US5771183A (en) * | 1996-06-28 | 1998-06-23 | Intel Corporation | Apparatus and method for computation of sticky bit in a multi-stage shifter used for floating point arithmetic |
| US5796644A (en) * | 1996-11-18 | 1998-08-18 | Samsung Electronics Company, Ltd. | Floating-point multiply-and-accumulate unit with classes for alignment and normalization |
| US6381624B1 (en) * | 1999-04-29 | 2002-04-30 | Hewlett-Packard Company | Faster multiply/accumulator |
| DE10050589B4 (de) * | 2000-02-18 | 2006-04-06 | Hewlett-Packard Development Co., L.P., Houston | Vorrichtung und Verfahren zur Verwendung beim Durchführen einer Gleitkomma-Multiplizier-Akkumulier-Operation |
| US6754688B2 (en) * | 2001-02-14 | 2004-06-22 | Intel Corporation | Method and apparatus to calculate the difference of two numbers |
| US7080111B2 (en) * | 2001-06-04 | 2006-07-18 | Intel Corporation | Floating point multiply accumulator |
| US7003539B1 (en) * | 2001-08-08 | 2006-02-21 | Pasternak Solutions Llc | Efficiently determining a floor for a floating-point number |
| US6947962B2 (en) * | 2002-01-24 | 2005-09-20 | Intel Corporation | Overflow prediction algorithm and logic for high speed arithmetic units |
| CN1265281C (zh) * | 2002-07-29 | 2006-07-19 | 矽统科技股份有限公司 | 浮点数的对数运算方法和装置 |
| US7290023B2 (en) * | 2003-11-20 | 2007-10-30 | International Business Machines Corporation | High performance implementation of exponent adjustment in a floating point design |
| US8069200B2 (en) * | 2005-04-28 | 2011-11-29 | Qsigma, Inc. | Apparatus and method for implementing floating point additive and shift operations |
| JP4571903B2 (ja) * | 2005-12-02 | 2010-10-27 | 富士通株式会社 | 演算処理装置,情報処理装置,及び演算処理方法 |
| JP4413198B2 (ja) * | 2006-03-23 | 2010-02-10 | 富士通株式会社 | 浮動小数点データの総和演算処理方法及びコンピュータシステム |
| GB2447968B (en) * | 2007-03-30 | 2010-07-07 | Transitive Ltd | Improvements in and relating to floating point operations |
| US8214417B2 (en) * | 2008-08-14 | 2012-07-03 | Oracle America, Inc. | Subnormal number handling in floating point adder without detection of subnormal numbers before exponent subtraction |
-
2009
- 2009-03-16 US US12/404,426 patent/US8402075B2/en active Active
-
2010
- 2010-03-11 JP JP2012500839A patent/JP5719341B2/ja active Active
- 2010-03-11 WO PCT/US2010/026908 patent/WO2010107650A1/en not_active Ceased
- 2010-03-11 CN CN201080011918.6A patent/CN102349049B/zh active Active
- 2010-03-11 EP EP10710952.2A patent/EP2409219B1/en active Active
- 2010-03-11 KR KR1020117023161A patent/KR101528340B1/ko active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950029924A (ko) * | 1994-04-29 | 1995-11-24 | 한탁돈 | 부동 소수점점 덧셈/뺄셈 연산기의 반올림 방법 및 장치 |
| KR970016935A (ko) * | 1995-09-29 | 1997-04-28 | 김광호 | 부동소숫점 덧셈기에서 스티키비트 검출방법 |
| KR20020037278A (ko) * | 2000-11-13 | 2002-05-18 | 가네꼬 히사시 | 축소된 회로 규모로 고정 소수점 데이터를 생성하는 회로및 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2409219A1 (en) | 2012-01-25 |
| CN102349049B (zh) | 2014-07-23 |
| CN102349049A (zh) | 2012-02-08 |
| WO2010107650A1 (en) | 2010-09-23 |
| JP2012521047A (ja) | 2012-09-10 |
| KR20120003878A (ko) | 2012-01-11 |
| US20100235416A1 (en) | 2010-09-16 |
| EP2409219B1 (en) | 2017-04-19 |
| JP5719341B2 (ja) | 2015-05-20 |
| US8402075B2 (en) | 2013-03-19 |
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