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The unary - operator works exactly as one would expect, it changes the postive/negative aspect of a number without changing its magnitude. For zero, which has neither a positive aspect nor a negative aspect, unary - yields zero. So, for any number apart from 0, unary - gives a result which is different from the operand.

Except for the bug, -0. The expression -&H80000==&H80000 evaluates to TRUE.

This operator is in the unary precedence group, which is the highest. This means all unary operators are evaluated before any others, e.g. addition, so -7+2 is evaluated as (-7)+2. Since all unary operators are prefixes to their operands, they are right-associative, i.e. the rightmost ones are evaluated first.

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