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File List | 1994-02-04 | 1.8 KB | 53 lines |
-
- Byoung Keum
- Dept. of Math.
- Univ. of IL. Urbana
-
-
- Differential Equations and Calculus V. 7.
- ============ ========= === ==============
-
- This update fixes the bug in my formula interpretor (nested
- '-' signs ), and contains a new program euler.com:
-
- 1. There was a minor bug in my old parser: -x-y was interpreted
- as -(x-y) (in view of the simplified recursion scheme).
- It is cmpletely fixed now.
-
- 2. I recently developed a new parser (written in Microsoft
- Quick C), which is so optimized as to be included in a
- large loop.
-
- 3. Compare euler.exe (New parser written in C) with ODE option
- in de.com (old parser written in Pascal ).
-
- Although their mathematical algorithms are similar,
- you will be marveled at the speed of euler.exe.
- ( I tested it on IBM AT (640K, 8087, EGA), and found that
- euler.exe performed about ten times faster. )
-
- 4. For this speed, euler.exe needs loots of memory (binary trees,
- recursion). I only tested it with 640 K RAM. (Probably it will
- work with less. )
-
-
- SYSTEM REQUIREMENT
- ====== ===========
- All these require EGA.
- CALC7.COM and DE7.COM require 8087 Math Coprocessor.
-
-
- REGISTER BENEFIT
- ======== =======
-
- I want to put this disk in shareware library.
- For those who register ( $30.00 would be reasonable ), I will
- provide a customized version for their need, and the source
- code for new parser (extremely fast, but large memory) and
- old parser (uses less memory). And, some documents will be
- provided.
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