JPS5541525A - Cosine sine operation system - Google Patents
Cosine sine operation systemInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-09-18 JP JP53114346A patent/JPS5925253B2/en not_active Expired
Cited By (3)
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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