Re: [boost] New Boost.XInt Library, request preliminary review

Subject: Re: [boost] New Boost.XInt Library, request preliminary review
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-03-29 21:16:59

AMDG

Arash Partow wrote:
> Scott McMurray wrote:
>> On 29 March 2010 21:04, Chad Nelson <chad.thecomfychair_at_[hidden]> 
>> wrote:
>>> Close, but not quite: the inverse of zero is zero.
>>>
>>
>> Uh, what?  I thought that the point of an inverse is that
>> multiplication gives 1 -- that's certainly what I read at
>> http://en.wikipedia.org/wiki/Modular_multiplicative_inverse
>>
>> Wouldn't the modulo inverse of 0 be a NaN just like the result of 1/0?
>
> I believe this to be more relevant:
> http://planetmath.org/encyclopedia/AdditiveInverseOfTheZeroInARing.html

modinv returns the multiplicative inverse, not the additive inverse.

In Christ,
Steven Watanabe