[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
## Re: [avr-libc-dev] Bug in math library

**From**: |
Colin O'Flynn |

**Subject**: |
Re: [avr-libc-dev] Bug in math library |

**Date**: |
Sun, 9 Jan 2005 11:04:23 -0400 |

**User-agent**: |
KMail/1.7.1 |

>* By the rigorous rules of mathematics "division by zero is undefined".*
>* An exception should be thrown or flagged. I do not know where*
>* the common idea that division by zero results in the answer of infinity*
>* originated.*
I assume from the fact that the limit of x / y, as y approaches 0 is infinity.
However x/0 is in fact quite undefined, and IMHO it should always result in a
NaN returned. As long as the rest of the floating point routines respect this
NaN, it will show up at the output of the system therefore alerting the
programmer (or someone) that an illegal math operation was attempted and
there is a bug somewhere.
>* As an interesting aside a negative zero, by law in Canada, must never be*
>* displayed on a weight-scale.*
Those crazy Canadians ;-)
Regards,
-Crazy Canuck Colin

**[avr-libc-dev] Bug in math library**, *Colin O'Flynn*, `2005/01/08`
**Re: [avr-libc-dev] Bug in math library**, *Marek Michalkiewicz*, `2005/01/08`
*Message not available*
*Message not available*
**Re: [avr-libc-dev] Bug in math library**, *Colin O'Flynn*, `2005/01/08`
**Re: [avr-libc-dev] Bug in math library**, *Colin O'Flynn*, `2005/01/08`
**Re: [avr-libc-dev] Bug in math library**, *Marek Michalkiewicz*, `2005/01/08`
**Re: [avr-libc-dev] Bug in math library**, *Colin O'Flynn*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**, *Paul Schlie*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**, *Paul Schlie*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**, *Bob Paddock*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**,
*Colin O'Flynn* **<=**
**Re: [avr-libc-dev] Bug in math library**, *Paul Schlie*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**, *Colin O'Flynn*, `2005/01/09`
**Re: [avr-libc-dev] Bug in math library**, *Joerg Wunsch*, `2005/01/09`