Checks whether a type T supports an unary negation operator, that is whether for an object T x an expression !x would be well-formed and convertible to bool.
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#include <chsvmetafun.h>


Checks whether a type T supports an unary negation operator, that is whether for an object T x an expression !x would be well-formed and convertible to bool.
| T | is a type to be checked. |