% operator with negatives

[Dave Rackley]

   In article <1990Dec12.185714.7169 at mp.cs.niu.edu> t901908 at mp.cs.niu.edu (Joe Adamo) writes:

   >>I know this may sound silly, but what is the effect of using the 
   >>% (mod) operator with negatives?  I can't seem to find any info on it.

In article <14722 at smoke.brl.mil> gwyn at smoke.brl.mil (Doug Gwyn) writes:

   >Two things:  % is NOT a modulo operator; it's a remainder operator, which
   >is not the same thing.  Also, for negative operands there are 
   >implementation-dependent aspects to the result obtained; in most 
   >applications you should avoid using negative operands.

Hmmm?  You answer is correct, except _K & R 2d edition_, page 41, refers to 
 % as the modulus operator.  Prentice Hall must have missed it during
their review.  I agree, one should avoid negative operands with %.

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