Cameron Clark wrote in a message to Erik Warmelink:
EW> Yes, but AFAIK not all numbers with the high bit set are negative
EW> numbers. 1's would be '-0', just as all 0's would be '+0'.
 CC>     All ones is -1  (0xff...)
 CC>     All zeros is 0  (0x00...)
He was talking about 1-complement systems, and thus about the portability 
problem of the high-bit check for a negative value.
greetz,
Tom
tomtorfs@mail.dma.be
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