JPS5592945A - Division processing system - Google Patents

Division processing system

Info

Publication number
JPS5592945A
JPS5592945A JP16240778A JP16240778A JPS5592945A JP S5592945 A JPS5592945 A JP S5592945A JP 16240778 A JP16240778 A JP 16240778A JP 16240778 A JP16240778 A JP 16240778A JP S5592945 A JPS5592945 A JP S5592945A
Authority
JP
Japan
Prior art keywords
approximate
divisor
reciprocal
approximate value
value
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.)
Pending
Application number
JP16240778A
Other languages
Japanese (ja)
Inventor
Satoru Kawai
Tetsuo Okamoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16240778A priority Critical patent/JPS5592945A/en
Publication of JPS5592945A publication Critical patent/JPS5592945A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to determine any strict error within a fixed range by finding value R0 approximate to the reciprocal number of divisor D for a division process between dividend N and divisor D.
CONSTITUTION: Approximate value R0 of the reciprocal of divisor D is found and approximate value R1 of the reciprocal of the product of divisor D and approximate value R0 is also found; and approximate value Ri+1 of the reciprocal of the product of D and approximate values R0WRi is similarly obtained. Then, approximate values R0WRn obtained in the above-mentioned way are processed according to (formula-A) and after the process is repeated fixed times until fixed error precision is obtained, expedient quotient Qn is obtained. Next, quotient Qn is rounded and under the condition the obtained remainder satisfies, corrections are made. This arithmetic is attained by a unit composed of normalization circuit parts 1 and 7, size-comparison and fine-adjustment processing part 2, R0 index table, multiplier 4, digit-matching processing part 5, adder 6, buffer or bus 8, and registers 9W16.
COPYRIGHT: (C)1980,JPO&Japio
JP16240778A 1978-12-29 1978-12-29 Division processing system Pending JPS5592945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16240778A JPS5592945A (en) 1978-12-29 1978-12-29 Division processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16240778A JPS5592945A (en) 1978-12-29 1978-12-29 Division processing system

Publications (1)

Publication Number Publication Date
JPS5592945A true JPS5592945A (en) 1980-07-14

Family

ID=15754010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16240778A Pending JPS5592945A (en) 1978-12-29 1978-12-29 Division processing system

Country Status (1)

Country Link
JP (1) JPS5592945A (en)

Similar Documents

Publication Publication Date Title
JPS5592945A (en) Division processing system
JPS5330241A (en) Arithmetic unit
JPS5663649A (en) Parallel multiplication apparatus
JPS5611548A (en) Division unit
JPS55102034A (en) Set unit for unit address
JPS57199044A (en) Multiplying device
JPS5520508A (en) Processor for division
JPS5694435A (en) Multiplying circuit
JPS6484333A (en) Divider
JPS5515524A (en) Digital arithmetic circuit
JPS57196351A (en) Floating point multiplying circuit
JPS51117841A (en) Rounding up equipment
JPS52100945A (en) Multiplication system
JPS54159832A (en) Adder and subtractor for numbers different in data length
JPS5448471A (en) Coding system
JPS55116142A (en) Floating-point multiplication system
JPS54162936A (en) Data processor
JPS55134455A (en) Parity forming circuit
JPS51115742A (en) 2's complement parallel type multiplication circuit
JPS643734A (en) Multiplication circuit
JPS5582353A (en) Multiplication and division operation system
JPS55166740A (en) Addition system
JPS53121439A (en) Interrupt processor
JPS5582352A (en) Multiplication and division operation system
JPS5341870A (en) Apparatus for processing fraction of cut of broaching machine