Creating Your Own Math Tools

[steve_bank]

https://www.ibm.com/developerworks/aix/tutorials/au-lexyacc/index.html

yacc and lex are tools you can use to create your own math language.

GNU packages should be available. The link has a shorrt tutorial/

You can

create a language with math expressions and logical expressions
create a lexical analyzer that parses the expressions
compile it

Have fun. Beats video games.

 

[Kharakov]

Steve, I know you have bad eyesight, so I don't know if you'd enjoy it too much, but I played around with a GLSL sandbox called Fragmentarium to create 3d fractals and other stuff. You can compile the latest versions.... if some of the guys are still working on it.

 

[steve_bank]

Steve, I know you have bad eyesight, so I don't know if you'd enjoy it too much, but I played around with a GLSL sandbox called Fragmentarium to create 3d fractals and other stuff. You can compile the latest versions.... if some of the guys are still working on it.

I appreciate the thought. Reading a book cover to cover right now is a chalenge, even a PDF magnified.

 

[Kharakov]

Can you make this out?

 

[steve_bank]

Can you make this out?

People used to take LSD to see that.

 

[Kharakov]

You sound like my mom. "That's so weird, it's like drugs, but it's there!!!"

 

[lpetrich]

lex is a lexical analyzer, also called a parser or a lexer. It determines what "words" are present and emits a string of tokens that correspond to them.

It has long been proprietary, and an open-source imitation of it has been written: flex.

yacc is "Yet Another Compiler Compiler". It takes a string of tokens and constructs a syntax tree from them.

It also has some open-source imitations, like GNU bison.

So it would do something like turn a*b + c*(d-e) into

+
. *
. . a
. . b
. *
. . c
. . -
. . . d
. . . e

 

[Speakpigeon]

https://www.ibm.com/developerworks/aix/tutorials/au-lexyacc/index.html

yacc and lex are tools you can use to create your own math language.

GNU packages should be available. The link has a shorrt tutorial/

You can

create a language with math expressions and logical expressions
create a lexical analyzer that parses the expressions
compile it

Have fun. Beats video games.

Well, programmation is all you need. I remember programming a multiplication and division calculator without limit to the size of the input or to precision beyond that of the memory. That is fun.

And, as you said, 3 x 1/3 never gets to equal 1.
EB

 

[Speakpigeon]

Can you make this out?

People used to take LSD to see that.

See? It's not infinite!
EB