P99_GENERIC_INTEGRAL_CONSTANT P99_GENERIC_NULLPTR P99_GENERIC_NULLPTR_CONSTANT P99_GENERIC_NULLPTR_CONSTANT_ P99_IS_INTEGRAL_CONSTANT P99_IS_NULLPTR P99_IS_NULLPTR_CONSTANT

P99_IS_NULLPTR_CONSTANT #define P99_IS_NULLPTR_CONSTANT (   PEXP )    P99_GENERIC_NULLPTR_CONSTANT((PEXP), true, false) Test if the expression PEXP is a null pointer constant in the sense of the C standard. A null pointer constant is any compile time constant of integral type (that is of integer or enum type) eventually cast to void*. Remarks Passing other integral values than 0 should result in a compile time diagnostic about type mismatch. A compile time constant of value 0 that is of a qualified version of void, e.g void const* should result in the value false. Remarks A const qualified variable of value 0 that is of integral type or void* should also result in the value false. PEXP will only be evaluated for its type, not for its value. The evaluation of this macro by itself results in a compile time expression of value false or true. See also P99_IS_NULLPTR P99_IS_INTEGRAL_CONSTANT Definition at line 1740 of file p99_generic.h.