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4.5.4 Unary Adding Operators
Static Semantics
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{unary
adding operator} {operator
(unary adding)} {+ operator}
{operator (+)} {plus
operator} {operator (plus)}
{- operator} {operator
(-)} {minus operator}
{operator (minus)} The
unary adding operators + (identity) and - (negation) are predefined for
every specific numeric type
T with their conventional meaning.
They have the following specifications:
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function "+"(Right : T) return T
function "-"(Right : T) return T
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16 For modular integer types,
the unary adding operator -, when given a nonzero operand, returns the
result of subtracting the value of the operand from the modulus; for
a zero operand, the result is zero.
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