JPS5541525A - Cosine sine operation system - Google Patents

Cosine sine operation system

Info

Publication number
JPS5541525A
JPS5541525A JP11434678A JP11434678A JPS5541525A JP S5541525 A JPS5541525 A JP S5541525A JP 11434678 A JP11434678 A JP 11434678A JP 11434678 A JP11434678 A JP 11434678A JP S5541525 A JPS5541525 A JP S5541525A
Authority
JP
Japan
Prior art keywords
pipeline processing
cosine
sine values
operation system
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.)
Granted
Application number
JP11434678A
Other languages
Japanese (ja)
Other versions
JPS5925253B2 (en
Inventor
Kenzo Hiraiwa
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 JP53114346A priority Critical patent/JPS5925253B2/en
Publication of JPS5541525A publication Critical patent/JPS5541525A/en
Publication of JPS5925253B2 publication Critical patent/JPS5925253B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to obtain cosKθ and sinKθ in a high speed by operating cos2mθ and sin2mθ from storage values of cosθ and sinθ and executing the pipeline processing of shift and the pipeline processing of addition operation.
CONSTITUTION: Corresponding cosine and sine values W are stored in storage area T1θ which stores cosine and sine values corresponding to θ, 2θ...nθ, and foure W2 (cosine and sine values corresponding to 2θ) are obtained simultaneously by the pipeline processing on a basis of the double angle formula from these two W, and W4 and W8 are obtained similarly. Next, W6 is obtained from these data W, W2, W4, and W8 by the addition theorem, and further, W3, W5, and W7 are obtained by the addition theorem, and finally, W, W2...W8 are obtained simultaneously. Since these operations do not collide with one another, they can be performed in parallel by the pipeline processing (steps 1W7).
COPYRIGHT: (C)1980,JPO&Japio
JP53114346A 1978-09-18 1978-09-18 Cosine/sine calculation method Expired JPS5925253B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53114346A JPS5925253B2 (en) 1978-09-18 1978-09-18 Cosine/sine calculation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53114346A JPS5925253B2 (en) 1978-09-18 1978-09-18 Cosine/sine calculation method

Publications (2)

Publication Number Publication Date
JPS5541525A true JPS5541525A (en) 1980-03-24
JPS5925253B2 JPS5925253B2 (en) 1984-06-15

Family

ID=14635453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53114346A Expired JPS5925253B2 (en) 1978-09-18 1978-09-18 Cosine/sine calculation method

Country Status (1)

Country Link
JP (1) JPS5925253B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213411A (en) * 1982-06-07 1983-12-12 Ikari Kosan Kk Automatic soldering device
WO2004068365A1 (en) * 2003-01-29 2004-08-12 Fujitsu Limited Fourier transform apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137839U (en) * 1984-02-24 1985-09-12 プルトンチエン株式会社 Locking mechanism in slide rail
JPH0517446Y2 (en) * 1987-04-30 1993-05-11

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213411A (en) * 1982-06-07 1983-12-12 Ikari Kosan Kk Automatic soldering device
JPH0210564B2 (en) * 1982-06-07 1990-03-08 Ikari Kosan Kk
WO2004068365A1 (en) * 2003-01-29 2004-08-12 Fujitsu Limited Fourier transform apparatus

Also Published As

Publication number Publication date
JPS5925253B2 (en) 1984-06-15

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