JPS6410327A - Floating point arithmetic processor - Google Patents

Floating point arithmetic processor

Info

Publication number
JPS6410327A
JPS6410327A JP16536587A JP16536587A JPS6410327A JP S6410327 A JPS6410327 A JP S6410327A JP 16536587 A JP16536587 A JP 16536587A JP 16536587 A JP16536587 A JP 16536587A JP S6410327 A JPS6410327 A JP S6410327A
Authority
JP
Japan
Prior art keywords
function
stores
floating point
point arithmetic
arithmetic processor
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
JP16536587A
Other languages
Japanese (ja)
Other versions
JPH0782431B2 (en
Inventor
Masatsugu Kametani
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 JP16536587A priority Critical patent/JPH0782431B2/en
Publication of JPS6410327A publication Critical patent/JPS6410327A/en
Publication of JPH0782431B2 publication Critical patent/JPH0782431B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To increase the function arithmetic speed by using a means which stores a coefficient function an(X') where f(X) is expressed only in the approximate value X' of X. CONSTITUTION:The f(X) is shown as a simple approximation formula of Taylor's expansion in f(X) a0(X')+a1(X').X and a0(X')=f(X')-f'(X').X' and a1(X')=f'(X) are obtained from the Taylor's expansion. A table memory 3 stores a coefficient function a0(X'); while a table memory 4 stores a coefficient function a1(X') respectively. When the addresses corresponding to X; are applied to both memories 3 and 4 from registers 5 and 6, a0(X') and a1(X') are read out. Then the function value of f(X) is calculated by an arithmetic executing unit 1 under the control of a microsequencer 2. Thus the basic arithmetic frequency is minimized for acquisition of the function f(X).
JP16536587A 1987-07-03 1987-07-03 Floating point processor Expired - Fee Related JPH0782431B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16536587A JPH0782431B2 (en) 1987-07-03 1987-07-03 Floating point processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16536587A JPH0782431B2 (en) 1987-07-03 1987-07-03 Floating point processor

Publications (2)

Publication Number Publication Date
JPS6410327A true JPS6410327A (en) 1989-01-13
JPH0782431B2 JPH0782431B2 (en) 1995-09-06

Family

ID=15810983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16536587A Expired - Fee Related JPH0782431B2 (en) 1987-07-03 1987-07-03 Floating point processor

Country Status (1)

Country Link
JP (1) JPH0782431B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004894A1 (en) * 1996-07-29 1998-02-05 Honeywell Inc. Method and apparatus for increasing update rates in measurement instruments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004894A1 (en) * 1996-07-29 1998-02-05 Honeywell Inc. Method and apparatus for increasing update rates in measurement instruments

Also Published As

Publication number Publication date
JPH0782431B2 (en) 1995-09-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees