11 Nov 1997 14:33:32 -0500

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Parsing a mathematical expression. Looking for an describing algebra ( hlinde@euronet.nl (1997-11-11) |

Re: Parsing a mathematical expression. Looking for an describing algeb ssolyanik@icdc.com (Sergey Solyanik) (1997-11-13) |

Re: Parsing a mathematical expression. Looking for an describing algeb thorssig@mmedia.is (Thorsteinn Sigurdsson) (1997-11-18) |

From: | hlinde@euronet.nl (Henk Linde) |

Newsgroups: | sci.math,sci.math.symbolic,comp.compilers |

Date: | 11 Nov 1997 14:33:32 -0500 |

Organization: | EuroNet Internet |

Keywords: | parse, question, comment |

Hello,

More than 10 years ago I wrote a program for my first year computing

science in university called expressions. This is a simple parser for

simple mathematical expressions. The most important was to have a good

algebra to start from. Our's looked like this:

expression : term + term; term - term; term .

term : factor * factor; factor / factor; factor.

factor : sign factor

; (expression)

; ident

; constant.

sign : + ; -

I want to expand this to include matrices,functions and user defined

functions. Does anyone here have such an algebra lying around ? Could

you mail it to me ? Or can you point me where I can find one ?

Thanks !

Henk Linde

Greetings from the Netherlands,

Henk Linde

hlinde@euronet.nl

Henk.Linde@inter.nl.net

[Sounds like Matlab. -John]

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