func go/constant.UnaryOp

4 uses

	go/constant (current package)
		value.go#L958: func UnaryOp(op token.Token, y Value, prec uint) Value {
		value.go#L982: 			re := UnaryOp(token.SUB, y.re, 0)
		value.go#L983: 			im := UnaryOp(token.SUB, y.im, 0)

	go/types
		expr.go#L198: 		x.val = constant.UnaryOp(op, x.val, prec)