20 Nov 2006 08:06:36 -0500

Related articles |
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[4 earlier articles] |

Re: Fastening the run-time interpretation of mathematical expressions martin@gkc.org.uk (Martin Ward) (2006-11-13) |

Re: Fastening the run-time interpretation of mathematical expressions tommy.thorn@gmail.com (Tommy Thorn) (2006-11-13) |

Re: Fastening the run-time interpretation of mathematical expressions 148f3wg02@sneakemail.com (Karsten Nyblad) (2006-11-15) |

Re: Fastening the run-time interpretation of mathematical expressions martin@gkc.org.uk (Martin Ward) (2006-11-15) |

Re: Fastening the run-time interpretation of mathematical expressions idknow@gmail.com (idknow@gmail.com) (2006-11-15) |

Re: Fastening the run-time interpretation of mathematical expressions gah@ugcs.caltech.edu (glen herrmannsfeldt) (2006-11-16) |

Re: Fastening the run-time interpretation of mathematical expressions darius@raincode.com (Darius Blasband) (2006-11-20) |

From: | Darius Blasband <darius@raincode.com> |

Newsgroups: | comp.compilers |

Date: | 20 Nov 2006 08:06:36 -0500 |

Organization: | [ posted via Easynet Belgium ] |

References: | 06-11-052 |

Keywords: | performance, design |

One way of having very fast interpretation would be to generate

C code for the function, and compile it on the fly with TCC (which

performs very few optimization but I expect it to be faster than

an interpreter in such a case) and call it on the fly as well.

http://fabrice.bellard.free.fr/tcc/

The web site contains extensive examples where one has a C function

in a string, compiles it, and calls it repetitively. It might be

overkill for you app, but it's fun, for sure :-)

PAolo wrote:

*> I am writing a piece of software that accept in input the definition*

*> of a mathematical function and a list of points in which evaluate the*

*> function and puts the result in output. The main feature of the progam*

*> is that once the function definition is read, the program evaluates*

*> the function very fast [Well this isn't done already...]. I was*

*> thinking to build a pair of stacks, one containig the operands*

*> (floats) and the other containig the operators (function pointers).*

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