20 May 1999 01:47:33 -0400

Related articles |
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[5 earlier articles] |

Re: Rounding with Div and Mod operators anton@mips.complang.tuwien.ac.at (1999-05-16) |

Re: Rounding with Div and Mod operators Scott.Daniels@Acm.Org (Scott.David.Daniels) (1999-05-16) |

Re: Rounding with Div and Mod operators cdg@nullstone.com (Christopher Glaeser) (1999-05-16) |

Re: Rounding with Div and Mod operators johan.persson@mbox319.swipnet.se (Johan Persson) (1999-05-16) |

Re: Rounding with Div and Mod operators genew@shuswap.net (1999-05-20) |

Re: Rounding with Div and Mod operators sofkam@rpi.edu (1999-05-20) |

Re: Rounding with Div and Mod operators drh@microsoft.com (Dave Hanson) (1999-05-20) |

Re: Rounding with Div and Mod operators anton@mips.complang.tuwien.ac.at (1999-05-20) |

Re: Rounding with Div and Mod operators peter.r.wilson@boeing.com (Peter Wilson) (1999-05-20) |

Re: Rounding with Div and Mod operators mfinney@lynchburg.net (1999-05-21) |

Re: Rounding with Div and Mod operators jmoore@softmoore.com (John I. Moore, Jr.) (1999-05-22) |

Re: Rounding with Div and Mod operators lassehp@imv.au.dk (1999-05-22) |

Re: Rounding with Div and Mod operators r_barton1@hotmail.com (Barton) (1999-05-22) |

[2 later articles] |

From: | "Dave Hanson" <drh@microsoft.com> |

Newsgroups: | comp.compilers |

Date: | 20 May 1999 01:47:33 -0400 |

Organization: | Microsoft Corp. |

References: | 99-05-039 99-05-042 |

Keywords: | arithmetic |

Wclodius <wclodius@aol.com> wrote in message news:99-05-042@comp.compilers...

*> << Subject: Rounding with Div and Mod operators*

*> From: "William Rayer" <william.rayer@virgin.net>*

*> Date: Sun, May 9, 1999 4:47 PM*

*>*

*> I'm writing a compiler for a new language which is to include the*

*> integer division and integer remainder operators (div and mod). I have*

*> some questions about the way these operators do rounding with negative*

*> operands and would appreciate any feedback.*

Modula-3 has the best and most concise definition (i.e., the one

mathematicians prefer) I've seen; visit

http://www.research.digital.com/SRC/m3defn/html/arithmetic.html for

details. There's a C implementation of these semantics in Chap. 2 of

my book, C Interfaces and Implementations (see

http://www.cs.princeton.edu/software/cii/)

dave hanson

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