DE3851792D1 - Gerät und Verfahren zur Beschleunigung von Additions- und Subtraktionsoperationen auf Gleitkommazahlen durch Beschleunigung des effektiven Subtraktionsverfahrens. - Google Patents
Gerät und Verfahren zur Beschleunigung von Additions- und Subtraktionsoperationen auf Gleitkommazahlen durch Beschleunigung des effektiven Subtraktionsverfahrens.Info
- Publication number
- DE3851792D1 DE3851792D1 DE3851792T DE3851792T DE3851792D1 DE 3851792 D1 DE3851792 D1 DE 3851792D1 DE 3851792 T DE3851792 T DE 3851792T DE 3851792 T DE3851792 T DE 3851792T DE 3851792 D1 DE3851792 D1 DE 3851792D1
- Authority
- DE
- Germany
- Prior art keywords
- accelerating
- subtraction
- floating point
- point numbers
- addition
- 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
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)
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 (2)
Publication Number | Publication Date |
---|---|
DE3851792D1 true DE3851792D1 (de) | 1994-11-17 |
DE3851792T2 DE3851792T2 (de) | 1995-05-04 |
Family
ID=22058548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3851792T Expired - Lifetime DE3851792T2 (de) | 1987-06-19 | 1988-06-20 | Gerät und Verfahren zur Beschleunigung von Additions- und Subtraktionsoperationen auf Gleitkommazahlen durch Beschleunigung des effektiven Subtraktionsverfahrens. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4852039A (de) |
EP (1) | EP0296070B1 (de) |
JP (1) | JPH01321516A (de) |
KR (1) | KR930004329B1 (de) |
AU (1) | AU613050B2 (de) |
CA (1) | CA1289257C (de) |
DE (1) | DE3851792T2 (de) |
IL (1) | IL86792A (de) |
Families Citing this family (10)
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 |
US5668984A (en) * | 1995-02-27 | 1997-09-16 | International Business Machines Corporation | Variable stage load path and method of operation |
US5646875A (en) * | 1995-02-27 | 1997-07-08 | International Business Machines Corporation | Denormalization system 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)
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 |
-
1987
- 1987-06-19 US US07/064,836 patent/US4852039A/en not_active Expired - Lifetime
-
1988
- 1988-06-17 CA CA000569703A patent/CA1289257C/en not_active Expired - Fee Related
- 1988-06-19 IL IL86792A patent/IL86792A/xx unknown
- 1988-06-20 EP EP88401538A patent/EP0296070B1/de not_active Expired - Lifetime
- 1988-06-20 JP JP63152089A patent/JPH01321516A/ja active Granted
- 1988-06-20 KR KR1019880007417A patent/KR930004329B1/ko not_active IP Right Cessation
- 1988-06-20 DE DE3851792T patent/DE3851792T2/de not_active Expired - Lifetime
- 1988-06-20 AU AU18138/88A patent/AU613050B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
AU1813888A (en) | 1988-12-22 |
AU613050B2 (en) | 1991-07-25 |
EP0296070B1 (de) | 1994-10-12 |
IL86792A (en) | 1991-06-30 |
EP0296070A2 (de) | 1988-12-21 |
CA1289257C (en) | 1991-09-17 |
KR890000966A (ko) | 1989-03-17 |
KR930004329B1 (ko) | 1993-05-26 |
US4852039A (en) | 1989-07-25 |
JPH01321516A (ja) | 1989-12-27 |
EP0296070A3 (de) | 1991-01-30 |
JPH0545981B2 (de) | 1993-07-12 |
DE3851792T2 (de) | 1995-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: GRUENECKER, KINKELDEY, STOCKMAIR & SCHWANHAEUSSER, 80538 MUENCHEN |