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 Math Products
GoFast® for 8051 Family
Fast Floating Point Library
Features
- Fast
- ROMable
- IEEE 754 Format
- Includes single and double precision
- Includes test programs
Description
GoFastŪ for 8051 was carefully designed for high performance operation on
8051 and derivative architectures. The product optimizes for a balance of space and speed
Speed
Timings for some functions follow. These sample microsecond timings are based
on a 12 MHz 8051.
Approximate Timings in Microsecond
(Typical-Maximum)
| Functions |
Single |
Double |
| add |
260-370 |
750-1100 |
| multiply |
450-560 |
1380-1530 |
| divide |
1070-1390 |
5300-6900 |
| sin/cos |
5050 |
23400 |
| ln |
6000 |
23000 |
| sqrt |
2850 |
18500 |
Floating Point Technology
GoFast for 8051 is based on U S Software's proven floating point algorithms
the company has been developing for over a decade. The algorithms have been
thoroughly tested using automated methods. GoFast was specifically optimized and
integrated for high performance on 8051 processors.
Functionality
GoFast for 8051 implements a floating point accumulator (FAC) in read-write
memory. Operations and functions are performed using the value in FAC.
GoFast for 8051 is not naturally reentrant. However, reentrancy can be
achieved by saving/restoring the FAC and other GoFast temporaries during a context
switch. An application note included with the product describes the procedure.
+ - * /
comparison operations
sqrt
sin, cos, tan
atan
ln, log
exp, xtoi
Integer to/from Float conversions
ASCII to/from Float conversions
GoFast Support
U S Software maintains a test lab where comprehensive confidence tests are
performed on GoFast in each target environment. A demonstration test program is included with your product delivery, and you are encouraged to run it on your own target
hardware to verify system operation. Phone and fax support are provided with the
product. Extended support is also available.
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