JPS5330241A - Arithmetic unit - Google Patents

Arithmetic unit

Info

Publication number
JPS5330241A
JPS5330241A JP10464176A JP10464176A JPS5330241A JP S5330241 A JPS5330241 A JP S5330241A JP 10464176 A JP10464176 A JP 10464176A JP 10464176 A JP10464176 A JP 10464176A JP S5330241 A JPS5330241 A JP S5330241A
Authority
JP
Japan
Prior art keywords
calculation
arithmetic unit
exceptional
normalization
multiplication
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.)
Granted
Application number
JP10464176A
Other languages
Japanese (ja)
Other versions
JPS5537028B2 (en
Inventor
Jiro Imamura
Koichiro Omoda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10464176A priority Critical patent/JPS5330241A/en
Publication of JPS5330241A publication Critical patent/JPS5330241A/en
Publication of JPS5537028B2 publication Critical patent/JPS5537028B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To shorten the calculation time for the multiplication and division unit used for the calculation of the floating decimal point data, by reducing the cycle number required for the detection of the post-normalization and the exceptional terms after calculation at the mantissa part and the exponent part.
COPYRIGHT: (C)1978,JPO&Japio
JP10464176A 1976-09-01 1976-09-01 Arithmetic unit Granted JPS5330241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10464176A JPS5330241A (en) 1976-09-01 1976-09-01 Arithmetic unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10464176A JPS5330241A (en) 1976-09-01 1976-09-01 Arithmetic unit

Publications (2)

Publication Number Publication Date
JPS5330241A true JPS5330241A (en) 1978-03-22
JPS5537028B2 JPS5537028B2 (en) 1980-09-25

Family

ID=14386067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10464176A Granted JPS5330241A (en) 1976-09-01 1976-09-01 Arithmetic unit

Country Status (1)

Country Link
JP (1) JPS5330241A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54163640A (en) * 1978-06-15 1979-12-26 Fujitsu Ltd Multiplying device control system
JPS59154542A (en) * 1983-02-23 1984-09-03 Hitachi Ltd Multiplying device
JPS63204324A (en) * 1987-02-19 1988-08-24 Fujitsu Ltd Multiplying system for floating point
JPS63259720A (en) * 1988-03-25 1988-10-26 Hitachi Ltd Floating point multiplication circuit
JPH02170225A (en) * 1988-12-22 1990-07-02 Koufu Nippon Denki Kk System for detecting arithmetic exception
JPH02170224A (en) * 1988-12-22 1990-07-02 Koufu Nippon Denki Kk System for detecting arithmetic exception
JPH02294730A (en) * 1989-04-17 1990-12-05 Internatl Business Mach Corp <Ibm> Floating point arithmetic processor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62204573U (en) * 1986-06-20 1987-12-26

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54163640A (en) * 1978-06-15 1979-12-26 Fujitsu Ltd Multiplying device control system
JPS59154542A (en) * 1983-02-23 1984-09-03 Hitachi Ltd Multiplying device
JPH0578049B2 (en) * 1983-02-23 1993-10-28 Hitachi Ltd
JPS63204324A (en) * 1987-02-19 1988-08-24 Fujitsu Ltd Multiplying system for floating point
JPS63259720A (en) * 1988-03-25 1988-10-26 Hitachi Ltd Floating point multiplication circuit
JPH0327938B2 (en) * 1988-03-25 1991-04-17 Hitachi Seisakusho Kk
JPH02170225A (en) * 1988-12-22 1990-07-02 Koufu Nippon Denki Kk System for detecting arithmetic exception
JPH02170224A (en) * 1988-12-22 1990-07-02 Koufu Nippon Denki Kk System for detecting arithmetic exception
JPH02294730A (en) * 1989-04-17 1990-12-05 Internatl Business Mach Corp <Ibm> Floating point arithmetic processor

Also Published As

Publication number Publication date
JPS5537028B2 (en) 1980-09-25

Similar Documents

Publication Publication Date Title
JPS5330241A (en) Arithmetic unit
JPS5378742A (en) Multiplication control system
JPS535940A (en) Multiplication system
JPS53112627A (en) Division control system
JPS5624645A (en) Decimal multiplication system
JPS5386539A (en) Arithmetic unit
JPS53135531A (en) Data processor
JPS51117841A (en) Rounding up equipment
JPS52144936A (en) Decimal system division system
JPS52130545A (en) Calculator
JPS533128A (en) Method and device for pattern analysis
JPS52112249A (en) Round-off system for floating decimal point computation
JPS5452945A (en) Floating decimal point arithmetic control unit
JPS5290229A (en) Exponent displaying system in portable computer
JPS5347243A (en) Logarithmic arithmetic unit
JPS5416148A (en) Electronic desk calculator
JPS542637A (en) Floating-point arithmetic unit
JPS522134A (en) Arithmetic system
JPS53113440A (en) Information processing method and its unit
JPS5294747A (en) Electronic apparatus
JPS525229A (en) Arithmetic device
JPS5318356A (en) Diagnosis apparatus of electronic computer
JPS51146146A (en) Console elecronic computer
JPS5287947A (en) Electronic computer unit
JPS5336152A (en) Arithmetic circuit