Description

Use this macro to declare a new name for the third state of a tribool. This state can have any number of new names (in addition to indeterminate ), all of which will be equivalent. The new name will be placed in the namespace in which the macro is expanded.

Example: BOOST_TRIBOOL_THIRD_STATE(true_or_false)

tribool x(true_or_false); // potentially set x if (true_or_false(x)) { // don't know what x is }