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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

     NOTES

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15  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.