JPS55159248A - Operating system - Google Patents
Operating systemInfo
- Publication number
- JPS55159248A JPS55159248A JP6587579A JP6587579A JPS55159248A JP S55159248 A JPS55159248 A JP S55159248A JP 6587579 A JP6587579 A JP 6587579A JP 6587579 A JP6587579 A JP 6587579A JP S55159248 A JPS55159248 A JP S55159248A
- Authority
- JP
- Japan
- Prior art keywords
- decimal point
- data
- output
- floating
- circuit
- 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
Links
Abstract
PURPOSE: To speed up the operating processing, by sequentially converting the floating decimal point data to the fixed decimal point data, in the output of a pipeline type operating circuit.
CONSTITUTION: The input data is a fixed decimal point data. The data is operated by converting it into the floating decimal point to prevent the overflow in the operating processing circuit. The output after operation is converted again and returned to the fixed decimal point. To convert the data, the position of the decimal point of the floating decimal point is shifted. The reference value of the shift is set in the latch circuit. The result is output by 2 clocks in the operating circuit. That is, after the end of the operation by floating decimal point, shift is made according to the number of shifts in the latch circuit to output the data of fixed decimal point.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6587579A JPS55159248A (en) | 1979-05-28 | 1979-05-28 | Operating system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6587579A JPS55159248A (en) | 1979-05-28 | 1979-05-28 | Operating system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55159248A true JPS55159248A (en) | 1980-12-11 |
Family
ID=13299579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6587579A Pending JPS55159248A (en) | 1979-05-28 | 1979-05-28 | Operating system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55159248A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126135A (en) * | 1984-07-16 | 1986-02-05 | Nec Corp | Conversion circuit of floating point data |
JP2004213622A (en) * | 2002-12-27 | 2004-07-29 | Arm Ltd | Data processing device and method converting number between fixed point display and floating point display |
-
1979
- 1979-05-28 JP JP6587579A patent/JPS55159248A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126135A (en) * | 1984-07-16 | 1986-02-05 | Nec Corp | Conversion circuit of floating point data |
JP2004213622A (en) * | 2002-12-27 | 2004-07-29 | Arm Ltd | Data processing device and method converting number between fixed point display and floating point display |
JP2009093662A (en) * | 2002-12-27 | 2009-04-30 | Arm Ltd | Data processing apparatus and method for converting number between fixed-point and floating-point representations |
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