Why does (-1 % 79) equal -1 and not 79?

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Anonymous Fri May 20 15:56:14 2011 No.3092919 [Reply] [Original]

Why does (-1 % 79) equal -1 and not 79?

Anonymous Fri May 20 16:07:14 2011 No.3092982

% is the modulus operator, because -1/79 cannot be simplified into a whole number, it becomes 0/79 with remainder of -1, and the modulus operator returns the remainder of the division of the two terms entered

-With pleasure, a programmer without a life.

Josef !!nUf2NflSAyw Fri May 20 16:20:14 2011 No.3093054

There are different definitions of mod. Another one is for example<div class="math">a~\mathrm{mod_1}~b := a - \left\lfloor \frac ab \right\rfloor b</div><div class="math">-1~\mathrm{mod_1}~79 = -1 - \left\lfloor -\frac1{79} \right\rfloor 79=-1 - (-1)\cdot 79=78</div>

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